COMPOSITION FOR THE ATTACHMENT OF A TOOTH GLARE ON A TOOTH SUPPORTING STRUCTURE, A PROCEDURE AND A USE OF IT

Using sparingly soluble calcium salt for local remineralization of teeth, useful for treating sensitive teeth, also inhibits development of caries

Use of a composition (A) that contains sparingly soluble calcium salt (I) and/or its composite of particle size 1-500 nm for local remineralization of teeth.

CALCIUM SALT OF ABSTENTIONS CHEWING RUBBER

COLOURING SOLUTION FOR DENTALE CERAMIC(S) ARTICLE AND EQUIVALENT PROCEDURE

KOMPOSITMATERIALIEN FROM CALCIUM CONNECTIONS AND GLUCURONSÄUREHALTIGEN POLYSACCHARIDEN

MULTIFUNCTIONAL STAR-SHAPED PREPOLYMERS, THEIR PREPARATION AND USE

The present invention relates to coatings whose dynamic contact angle hysteresis measured in water to DIN EN 14370 by means of a Wilhelmy balance is at most 15° and which can be produced from star-shaped prepolymer-nanoparticle complexes and/or star-shaped prepolymers crosslinkable with one another and with the surface of the substrate to be coated, where the star-shaped prepolymer-nanoparticle complexes and/or star-shaped prepolymers have, prior to their crosslinking, at least three hydrophilic polymer branches which are intrinsically soluble in water and which bear, at all of or at some of their free ends, silyl end groups R1 of the following general formula (I): R1 is -CRa 2-Si(ORb)r(Rc)3-r, where Ra is hydrogen or a linear or branched alkyl group having from 1 to 6 carbon atoms, ORb is a hydrolysable group, Rc is a linear or branched alkyl group having from 1 to 6 carbon atoms and r is a number from 1 to 3, and which, at any ends present which do not bear silyl end groups, bear reactive groups which are reactive towards themselves, towards the substrate to be coated, towards entities optionally introduced into the coating and/or towards the silyl end groups. The present invention also relates to a process for production of these coatings, and to star-shaped prepolymers as used in the coatings. The invention also relates to the use of the star-shaped prepolymers as additives of various compositions for providing temporary or permanent antisoiling properties to surfaces.

PREFORMED DENTAL COMPOSITE CROWN, PROCESS OF PRODUCTION AND USE THEREOF

The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety. The invention also relates to a kit of parts comprising such a preformed dental composite crown, processes for producing such crowns and the use of such a crown for treating a dental tooth. 2. The dental composite crown of claim 1 , the shape being further characterized by at least one or more or all of the following features:wall thickness of the side surfaces of the crown: not exceeding 0.6 mm;wall thickness of the side surfaces of the crown: from 0.1 to 0.4 mm;wall thickness of the top surface of the crown: from 0.15 mm and 1.5 mm;undercut: more than 0.2 mm.3. The dental composite crown of claim 1 , the nano-filler(s) comprising particles of SiO claim 1 , ZrO claim 1 , AlOor mixtures thereof.4. The dental composite crown of claim 1 , the nano-filler(s) comprising aggregated claim 1 , agglomerated claim 1 , discrete nano-sized particles or mixtures thereof.6. The dental composite crown of claim 1 , the (meth)acrylate(s) not comprising an urethane moiety being characterized as follows:molecular weight being in a range from 170 to 3,000 g/mol,comprising at least 2 polymerizable ...

RESTORATION, RESTORATION COMPONENTS, AND METHODS OF MAKING A DENTAL RESTORATION

A method is provided for making a dental restoration at a certain tooth color shade. The method comprises joining a veneer precursor, a framework and a compensation material to form the dental restoration. The tooth color shade is selected from among a continuous range of tooth color shades, but individual components of the dental restoration may be selected from discrete color shades. Further, a dental restoration, a kit and a use of the kit are provided in accordance with the invention.

COATED CHEWING RUBBER

CALCIUM CONTAINING SWEET

DENTAL MILLING BLOCK CONTAINING INDIVIDUALIZED DENTAL ARTICLE AND PROCESS OF PRODUCTION

The invention relates to a dental milling block () comprising a dental article () having an outer surface, the dental article having been produced based on personalized data, wherein the outer surface of the dental article is at least partially covered with a surrounding material. The invention further relates to a process of producing a dental milling block, the process comprising the steps of: •a) providing a personalized Data Set C containing geometry data of the dental article and colour data related to said geometry data, •b) generating a layer of hardenable material on a surface, •c) applying a colour agent to the layer of hardenable material of step b), wherein the colour agent is applied to at least some regions of those areas of the layer of hardenable material which are related to the geometry data of the dental article, •d) consolidating the result obtained in step c) thereby obtaining an at least partially hardened layer of material. 1. A dental milling block comprising a dental article having an outer surface , the dental article being based on personalized data , the personalized data comprising colour data , wherein the outer surface of the dental article is at least partially covered or surrounded with a surrounding material.2. The dental milling block according to claim 1 , the dental article having the shape of a crown claim 1 , bridge claim 1 , veneer claim 1 , implant claim 1 , abutment claim 1 , root-pin claim 1 , orthodontic bracket claim 1 , dental support structure claim 1 , inlay claim 1 , onlay claim 1 , drilling template claim 1 , full arch prostheses or part thereof.3. The dental milling block according to claim 1 , the surrounding material surrounding or covering at least about 90% of the surface of the dental article.4. The dental milling block according to claim 1 , being characterized by at least one of the following features:comprising a marking element;having the shape of a cube, cuboid or cylinder;having being produced by using a ...

CHEWING GUM CONTAINING CALCIUM SALT

SWEET CONTAINING CALCIUM

SYSTEMS AND METHODS FOR MAKING LAYERED DENTAL APPLIANCES

A system and method for making a layered dental appliance. The system can include a mold comprising a negative of an outer shape of a layered dental appliance, and a dental core dimensioned to be at least partially received in the mold. The method can include positioning a first slurry in the mold, and pressing the dental core into the first slurry in the mold to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the mold, and firing the first article. The method can further include positioning a second slurry in the mold, and pressing the first article into the second slurry in the mold to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

Aerogels, calcined and crystalline articles and methods of making the same

Aerogel, calcined articles, and crystalline articles comprising ZrO2. Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons).

ADDITIVE PROCESSING OF FLUOROPOLYMERS

Provided are methods for making shaped fluoropolymer by additive processing using a polymerizable binder. Also are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Umhüllter Kaugummi

Die Erfindung betrifft einen Kaugummi, der von einer Schicht umhüllt ist, wobei diese Schicht schwer wasserlösliches Calciumsalz und/oder dessen Komposite umfaßt. The invention relates to a chewing gum which is covered by a layer, this layer comprising sparingly water-soluble calcium salt and / or its composites.

UMHÜLLTER KAUGUMMI

Device and method for progressively building up an object from a light hardenable material

A device (1) for progressively building up an object from a light hardenable material. The device (1) has a perforated build platform (15) for the object. The build platform (15) forms a build surface (16) that faces a light source (11). The build platform (15) and the light source (11) are positionable relative to each other by computer control. The device (1) is further configured for supplying the light hardenable material through the perforation of the build platform (15) for building up the object. Therefore enabling the making of colored objects by stereolithography.

COATED CHEWING GUM

Coated chewing gum

AEROGELS, CALCINED AND CRYSTALLINE ARTICLES AND METHODS OF MAKING THE SAME

Aerogel, calcined articles, and crystalline articles comprising ZrO. Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons). 120.-. (canceled)21. A monolithic aerogel comprising organic material and crystalline metal oxide particles , wherein the crystalline metal oxide particles are in a range from 3 to 20 volume percent , based on the total volume of the monolithic aerogel , wherein at least 70 mole percent of the crystalline metal oxide is ZrO.22. The monolithic aerogel of claim 21 , wherein the crystalline metal oxide particles are in a range from 1 to 15 mole percent of the crystalline metal oxide is YO.23. The monolithic aerogel of claim 21 , wherein the crystalline metal oxide particles have an average primary particle size in a range of 2 nanometers to 50 nanometers.24. The monolithic aerogel of claim 21 , wherein the crystalline material further comprises at least one of YOor LaO.25. The monolithic aerogel of claim 21 , wherein the ZrOis all tetragonal or cubic.26. The aerogel of claim 21 , wherein the organic content in a range of 3 to 30 percent by weight claim 21 , based on the total weight of the aerogel.27. The aerogel of claim 21 , wherein the aerogel has a surface area in a range of 100 m/gram to 300 m/gram.28. The aerogel of claim 21 , wherein an average connected pore size is in a range of 10 nanometers to 20 nanometers.29. The aerogel of claim 21 , wherein the aerogel is crack-free.30. The aerogel of claim 21 , wherein the organic material content is in a range of 3 to 30 weight percent claim 21 , based on a total weight of the aerogel.31. The aerogel of claim 21 , wherein the crystalline metal oxide particles further comprise at least ...

COLOURING SOLUTION FOR DENTAL CERAMIC FRAMEWORK AND RELATED METHODS

The invention relates to a colouring solution for dental ceramic framework comprising a solvent, a colouring agent comprising metal ions, and a complexing agent, wherein the amount of complexing agent is sufficient to dissolve the colouring agent in the solvent. The invention also relates to a process for colouring dental ceramic framework and dental ceramic framework coloured with the colouring solution.

COMPOSITE MATERIALS MADE OF CALCIUM COMPOUNDS AND POLYSACCHARIDES CONTAINING GLUCURONIC ACID AND/OR IDURONIC ACID

The invention relates to composite materials made of calcium salts that are not easily water-soluble and polysaccharides containing glucuronic acid and/or iduronic acid. Said composite materials are particularly suitable for promoting bone consolidation and tooth enamel restoration due to the composition and fine structure thereof.

Device and method for progressively building up an object from a light hardenable material

A device (1) for progressively building up an object from a light hardenable material. The device (1) has a perforated build platform (15) for the object. The build platform (15) forms a build surface (16) that faces a light source (11). The build platform (15) and the light source (11) are positionable relative to each other by computer control. The device (1) is further configured for supplying the light hardenable material through the perforation of the build platform (15) for building up the object. Therefore enabling the making of colored objects by stereolithography.

PREFORMED DENTAL COMPOSITE CROWN, PROCESS OF PRODUCTION AND USE THEREOF

The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety. 115. -. (canceled)16. A process of producing a preformed dental composite crown by milling the preformed dental composite crown out of a milling block , the process comprising the steps of nano-filler(s) in an amount from 20 to 70 wt. %,', 'resin matrix in an amount from 20 to 75 wt. %,', 'wt. % with respect to the weight of the chemical composition,', 'the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety;, 'the chemical composition the composite milling block is made of comprising the following components, 'providing a composite milling block,'} for molars and premolars having an occlusal top surface and depending buccal,', 'mesial, distal and lingual, respectively palatinal side surfaces,', 'for anterior teeth and incisors having a distal top surface and depending labial, mesial,', 'distal and lingual, respectively palatinal side surfaces,', 'the side surfaces being connected to each other and forming a crown cervix,', 'the wall thickness of the crown at the crown cervix being lower than 0.6 mm;', 'at least two of ...

Coated chewing gum

Coated chewing gum

The invention relates to a chewing gum coated with at least one layer, the layer comprising slightly water-soluble calcium salt and/or a composite thereof.

Kompositmaterialien aus Calciumverbindungen und Glucuronsäure- und/oder Iduronsäurehaltigen Polysacchariden

Die Erfindung betrifft Kompositmaterialien aus schwer wasserlöslichen Calciumsalzen und Glucuronsäure- und/oder Iduronsäure-haltigen Polysacchariden, die sich aufgrund ihrer Zusammensetzung und Feinstruktur besonders zur Förderung der Wiederherstellung von Knochen und Zahnschmelz eignen.

KOMPOSITMATERIALIEN AUS CALCIUMVERBINDUNGEN UND GLUCURONSÄUREHALTIGEN POLYSACCHARIDEN

COATED CHEWING GUM

The invention relates to a chewing gum, which is coated with at least one layer, said layer comprising poorly water-soluble calcium salt and/or a composite thereof. © KIPO & WIPO 2007 ...

Methods for making layered dental appliances

A system and method for making a layered dental appliance. The system can include a mold comprising a negative of an outer shape of a layered dental appliance, and a dental core dimensioned to be at least partially received in the mold. The method can include positioning a first slurry in the mold, and pressing the dental core into the first slurry in the mold to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the mold, and firing the first article. The method can further include positioning a second slurry in the mold, and pressing the first article into the second slurry in the mold to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

Dental coloring stamp and a method of coloring

A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open-celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.

CALCIUM ENTHALTENDE SÜSSIGKEIT

Method and system for making a dental restoration

A method and system for making a dental restoration are provided. The method comprises the step of providing a computer model of a three-dimensional reference surface that is based for example on a tooth structure of a tooth to be restored in a patient's dentition. The method further comprises the steps of visualizing the three-dimensional reference surface, providing a user operable virtual material deposition tool, and using the virtual material deposition tool to deposit a plurality of differently colored layers on the reference surface. The system provides functionality to perform the method of the invention. The invention preferably helps maximizing optical and geometrical quality in a dental restoration.

Aerogels, calcined and crystalline articles and methods of making the same

Aerogel, calcined articles, and crystalline articles comprising ZrO 2 . Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons).

Dental blank comprising a pre-sintered porous zirconia material, process of|its production and dental article formed from said dental blank

The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process.

Multifunktionelle sternförmige Präpolymere, deren Herstellung und Verwendung

Die vorliegende Erfindung betrifft Beschichtungen, die eine mittels einer Wilhelmy-Waage nach DIN EN 14370 gemessene dynamische Kontaktwinkelhysterese in Wasser von höchstens 15° besitzen und herstellbar sind aus untereinander und mit der Oberfläche des zu beschichtenden Substrates vernetzbaren sternförmigen Präpolymeren und/oder sternförmigen Präpolymer-Nanoteilchen-Komplexen, wobei die sternförmigen Präpolymere und/oder sternförmigen Präpolymer-Nanoteilchen-Komplexe vor ihrer Vernetzung mindestens drei hydrophile Polymerarme besitzen, die für sich gesehen in Wasser löslich sind und die an allen oder einem Teil ihrer freien Enden Silyl-Endgruppen R¹ der folgenden allgemeinen Formel (I) R¹ ist -CR^a₂-Si(OR^b)_r(R^c)_3-r tragen, wobei R^a für Wasserstoff oder eine lineare oder verzweigte Alkylgruppe mit 1 bis 6 Kohlenstoffatomen steht, OR^b für eine hydrolysierbare Gruppe steht, R^{c ...}

Composite material, useful e.g. as neo- and remineralized component in preparation of composition for cleaning and/or care of teeth and for strengthening enamel, comprises highly water-soluble calcium salt and gelatin of type AB

Composite material comprises highly water-soluble calcium salt, where the calcium salt are present in the form of single crystallite or in the form of particle, comprising majority of crystallite form with an average particle diameter of less than 1000 nm, preferably 300 nm; and gelatin of type AB. Independent claims are included for: (1) a procedure for preparing the composite material comprising precipitating aqueous solution of water-soluble calcium salts and an aqueous solution of water-soluble phosphate- and/or fluoride salt in the presence of protein component; (2) a mouth-, dental care- and cleaning agent comprising the composite material; (3) a candy with a concentration of composite material; and (4) a composition for the induction or production of the new formation of bone tissue with a concentration of composite material. ACTIVITY : Osteopathic. MECHANISM OF ACTION : None given.

A METHOD OF MAKING A CUSTOMIZED DENTAL BLANK

A method of making a customized dental blank. The method has steps of obtaining from a dental practitioner a first color scheme and a different second color scheme as well as a first dimensional information for the first color scheme and a different second dimensional information for the second color scheme. The first and second dimensional information each relate to a size and/or a location within dimensions of the dental blank. The method further has the step of manufacturing the customized dental blank which has a first portion based on the first dimensional information according to the first color scheme and a second portion based on the second dimensional information according to the second color. Further the method has the step of providing the dental practitioner with the customized dental blank. The method helps facilitating the making of a dental restoration from a blank.

Dental Ceramic Article, Process for Production and Use Thereof

The invention describes a dental article comprising zirconium oxide and at least two different colouring substances A and B, substance A showing a light emission in the range of about 470 nm to about 510 nm and substance B showing a light absorption in the range from about 520 nm to about 750 nm. The invention also relates to different processes of producing the dental article e.g. by a process comprising a casting step, a pressing step, or an infiltration step and to the use of certain compositions containing either substance A or substance B for producing such a dental article.

Composite material, useful e.g. as neo- and /or remineralization component in the production of cleaning composition and care of the teeth, comprises highly water-soluble calcium salts and ampholytic polymer component

Composite material comprises high water-soluble calcium salts, where the calcium salts in the form of single crystallite or particle and majority of the calcium salts are crystallite form with an average particle diameter of less than 1000 nm, preferably 300 nm; and ampholytic polymer component, which exhibits an isoelectric point of 5-7.4. Independent claims are included for: (1) a procedure for the preparation of the composite material comprising precipitating aqueous solution of water-soluble calcium salt and aqueous solution of water-soluble phosphate- and/or fluoride salt in the presence of polymer component; (2) a mouth-, dental care and -cleaning agent with a content of composite material; (3) a sweet comprising a content of composite material; and (4) a composite for the induction or promotion of new formation of bone fabric with the composite material. ACTIVITY : Osteopathic. MECHANISM OF ACTION : None given.

SYSTEMS AND METHODS FOR MAKING LAYERED DENTAL APPLIANCES FROM THE OUTSIDE IN

A system and method for making a layered dental appliance. The system can include a first portion comprising a negative of a first layer of a layered dental appliance, and a second portion comprising a positive shape of a second layer of the layered dental appliance. The method can include providing a mold comprising a negative of an outer shape of a layered dental appliance, and positioning a slurry in the mold, forming a first layer of the layered dental appliance. The method can further include providing a solid structure comprising a positive shape of a second layer of the layered dental appliance, and pressing the solid structure into the slurry in the mold. 1. A method for making a layered dental appliance , the method comprising:providing a mold comprising a negative of an outer shape of a layered dental appliance;positioning a slurry in the mold, forming a first layer of the layered dental appliance;providing a solid structure comprising a positive shape of a second layer of the layered dental appliance, wherein the solid structure includes a stamp;pressing the solid structure into the slurry in the mold; andremoving the stamp from the slurry to form a cavity comprising a negative of the second layer in the slurry.24-. (canceled)5. The method of claim 1 , further comprising using the cavity as a mold for a second layer of the dental appliance.6. The method of claim 1 , wherein the slurry is a first slurry claim 1 , and further comprising positioning a second slurry in the cavity to form a second layer of the layered dental appliance.7. The method of claim 6 , further comprising pressing a dental core into the second slurry claim 6 , such that the core forms at least a portion of a third layer of the layered dental appliance.8. The method of claim 6 , further comprising:providing a second solid structure comprising a positive shape of a third layer of the layered dental appliance; andpressing the second solid structure into the second slurry.9. The method of ...

Coated chewing gum

Method and system for making a dental restoration

A method and system for making a dental restoration are provided. The method comprises the step of providing a computer model of a three-dimensional reference surface that is based for example on a tooth structure of a tooth to be restored in a patient's dentition. The method further comprises the steps of visualizing the three-dimensional reference surface, providing a user operable virtual material deposition tool, and using the virtual material deposition tool to deposit a plurality of differently colored layers on the reference surface. The system provides functionality to perform the method of the invention. The invention preferably helps maximizing optical and geometrical quality in a dental restoration.

Composition including fluoropolymer and inorganic filler and method of making a three-dimensional article

The method of making a three-dimensional article includes heating a composition comprising a fluoropolymer and inorganic filler, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a fluoropolymer and inorganic fillers is also described. The composition may be a filament. The composition can be useful, for example, in melt extrusion additive manufacturing. The fluoropolymer is semi-crystalline with a melting point of up to 325 DEG C and less than 50 percent by weight interpolymerized units of vinylidene fluoride or amorphous with a glass transition temperature of up to 280 DEG C.

Method of making a customized dental blank

A method of making a customized dental blank. The method has steps of obtaining from a dental practitioner a first color scheme and a different second color scheme as well as a first dimensional information for the first color scheme and a different second dimensional information for the second color scheme. The first and second dimensional information each relate to a size and/or a location within dimensions of the dental blank. The method further has the step of manufacturing the customized dental blank which has a first portion based on the first dimensional information according to the first color scheme and a second portion based on the second dimensional information according to the second color. Further the method has the step of providing the dental practitioner with the customized dental blank. The method helps facilitating the making of a dental restoration from a blank.

Dental ceramic article, process of production and use thereof

The present disclosure relates to a dental ceramic article comprising ceramic components, the ceramic components having ZrO2 and Al2O3 and at least one component comprising Mn, Er or mixtures thereof, Al2O3 being present in an amount below about 0.15 wt.-% with respect to the weight of the ceramic article. The present disclosure relates also to kit of parts comprising a ceramic article and a coloring solution and processes for producing a dental ceramic article.

Method of making a dental restoration

A method of making a dental restoration has the steps of: determining a virtual space available for accommodation of a dental restoration for a tooth to be restored; retrieving a predefined virtual master dental restoration surface from a database; fitting the virtual master dental restoration surface in the space to provide a virtual outer dental restoration surface; creating a virtual inner dental restoration surface independent of a shape of the tooth to be restored; providing a virtual model of a dental restoration based on a combination of the virtual outer dental restoration surface and the virtual inner dental restoration surface; and fabricating the dental restoration based on the dental restoration model.

Method of capturing data from a patient's dentition and system for performing such method

A method of capturing data from a patient's dentition with the steps of positioning a first optical sensor relative to patient's dentition, capturing the shape of a tooth in the patient's dentition, independent from capturing the shape, measuring a color at a location on the tooth, and providing a correlation between the location of the color and a coordinate in the captured shape. The invention helps providing a dental restoration at a relatively high optical, mechanical, and geometric quality.

SYSTEMS AND METHODS FOR MAKING LAYERED DENTAL APPLIANCES

A system and method for making a layered dental appliance. The system can include a first mold comprising a negative of a first layer of a layered dental appliance, a second mold comprising a negative of a second layer, and a dental core dimensioned to be at least partially received in the first mold and the second mold. The method can include positioning a first slurry in the first mold, and pressing the dental core into the first slurry to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the first mold, positioning a second slurry in the second mold, and pressing the first article into the second slurry to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

A SYSTEM FOR WASHING A 3D-PRINTED OBJECT

A system () for washing a 3D-printed object (). The system () has a washing device () and a workpiece () that includes the 3D-printed object (). The washing device () has a container () that forms a process chamber () for receiving a liquid cleaning agent (), and the container () has an inlet () into the process chamber (). The workpiece () further has a support structure () that supports the 3D-printed object () and a base () supporting the support structure (). The base (), in a mating relationship with the inlet (), forms a restraint preventing the workpiece () from passing through the inlet () in a situation in which the workpiece () is placed with the 3D-printed object () located within the process chamber (). 1. A system for washing a 3D-printed object , comprising a washing device and at least one workpiece that comprises the 3D-printed object , the washing device comprising a container forming a process chamber for receiving a liquid cleaning agent , the container having an inlet into the process chamber , wherein the workpiece further comprises at least one support structure supporting the 3D-printed object and a base supporting the support structure , wherein the base , in a mating relationship with the inlet , forms a restraint preventing the workpiece from passing through the inlet in a situation in which the workpiece is placed with the 3D-printed object located within the process chamber.2. The system of claim 1 , wherein the base claim 1 , in a mating relationship with the inlet claim 1 , closes the inlet.3. The system of claim 1 , wherein the washing device further has a heating element and a temperature sensor claim 1 , each being in fluid communication with the process chamber.4. The system of claim 1 , further having a fill level sensor for sensing a fill level of cleaning agent present in the process chamber and claim 1 , optionally claim 1 , a contamination detector for detecting a degree of contamination of the cleaning agent claim 1 , wherein ...

Composition for attaching a dental facing on a dental support structure, process and use thereof

The present invention relates to a composition for attaching a dental facing on a dental support structure comprising water, a glass and/or glass ceramic material, a rheological modifier with a molecular weight above about 500,000. The invention also relates to a process comprising the steps: providing a dental facing precursor and a dental support structure, both having an upper and a lower surface, attaching the dental facing precursor with its lower surface to the upper surface of the dental support structure, comprising the step of placing a mating composition between the lower surface of the dental facing precursor and the upper surface of the dental support structure and to the use of the inventive composition for producing dental restorations.

COMPOSITIONS INCLUDING POLYMER AND HOLLOW CERAMIC MICROSPHERES AND METHOD OF MAKING A THREE-DIMENSIONAL ARTICLE

The method of making a three-dimensional article includes heating a composition comprising a polymer and hollow ceramic microspheres, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a polymer and hollow ceramic microspheres is also described. The composition may be a filament. The polymer is at least one of a low-surface-energy polymer or polyolefin. The composition can be useful, for example, in melt extrusion additive manufacturing, for example, fused filament fabrication.

Aerogels, calcined and crystalline articles and methods of making the same

Aerogel, calcined articles, and crystalline articles comprising ZrO 2 . Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons).

Colouring solution for dental ceramic articles and related methods

The invention relates to a colouring solution for colouring a dental ceramic articles, the solution comprising: a solvent and a colouring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/l solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/l solvent. The invention also relates to a process for colouring dental ceramic articles, dental ceramic articles treated either with the colouring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

Aerogels, calcined and crystalline articles and methods of making the same

Aerogel, calcined articles, and crystalline articles comprising ZrO2. Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons).

PROCESS FOR PRODUCING A SINTERED LITHIUM DISILICATE GLASS CERAMIC DENTAL RESTORATION AND KIT OF PARTS

The present invention is directed to a process for producing a sintered lithium disilicate glass ceramic dental restoration out of a porous 3-dim article, the process comprising the step of sintering the porous 3-dim article having the shape of a dental restoration with an outer and inner surface to obtain a sintered lithium disilicate ceramic dental restoration, the sintered lithium disilicate glass ceramic dental restoration comprising—Si oxide calculated as SiO2 from 55 to 80 wt.-%, —Li oxide calculated as Li2O from 7 to 16 wt.-%, —Al oxide calculated as Al2O3 from 1 to 5 wt.-%, and—P oxide calculated as P2O5 from 1 to 5 wt.-%, wt.-% with respect to the weight of the dental restoration, the sintering being done under reduced atmospheric pressure conditions, the reduced atmospheric pressure conditions being applied at a temperature above 600° C. The present invention is also directed to a kit of parts comprising a porous 3-dim article having the shape of a dental milling block and a respective instruction of use. 1. A process for producing a sintered lithium disilicate glass ceramic dental restoration out of a porous 3-dim article , the process comprising:sintering the porous 3-dim article having the shape of a dental restoration with an outer and inner surface to obtain a sintered lithium disilicate ceramic dental restoration, Si oxide calculated as SiO2: from 55 to 80 wt.-%;', 'Li oxide calculated as Li2O: from 7 to 16 wt.-%;', 'Al oxide calculated as Al2O3: from 1 to 5 wt.-%; and', 'P oxide calculated as P2O5: from 1 to 5 wt.-%,, 'the sintered lithium disilicate glass ceramic dental restoration comprisingwt.-% with respect to the weight of the dental restoration,the sintering being done under reduced atmospheric pressure conditions, the reduced atmospheric pressure conditions being applied above a temperature of 600° C.2. The process of comprising:providing a porous 3-dim article, the 3-dim article having either the shape of a dental milling block or of a ...

Dental ceramic article, process for production and use thereof

The invention describes a dental article comprising zirconium oxide and at least two different coloring substances A and B, substance A showing a light emission in the range of about 470 nm to about 510 nm and substance B showing a light absorption in the range from about 520 nm to about 750 nm. The invention also relates to different processes of producing the dental article e.g. by a process comprising a casting step, a pressing step, or an infiltration step and to the use of certain compositions containing either substance A or substance B for producing such a dental article.

Methods for making layered dental appliances from the outside in

A system and method for making a layered dental appliance. The system can include a first portion comprising a negative of a first layer of a layered dental appliance, and a second portion comprising a positive shape of a second layer of the layered dental appliance. The method can include providing a mold comprising a negative of an outer shape of a layered dental appliance, and positioning a slurry in the mold, forming a first layer of the layered dental appliance. The method can further include providing a solid structure comprising a positive shape of a second layer of the layered dental appliance, and pressing the solid structure into the slurry in the mold.

Dental blank comprising a pre-sintered porous zirconia material, process of its production and dental article formed from said dental blank

The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process.

Additive processing of fluoropolymers

Provided are methods for making shaped fluoropolymer by additive processing using a polymerizable binder. Also are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

COMPOSITION FOR ATTACHING A DENTAL FACING ON A DENTAL SUPPORT STRUCTURE, PROCESS AND USE THEREOF

The present invention relates to a composition for attaching a dental facing on a dental support structure comprising water, a glass and/or glass ceramic material, a rheological modifier with a molecular weight above about 500,000. The invention also relates to a process comprising the steps: providing a dental facing precursor and a dental support structure, both having an upper and a lower surface, attaching the dental facing precursor with its lower surface to the upper surface of the dental support structure, comprising the step of placing a mating composition between the lower surface of the dental facing precursor and the upper surface of the dental support structure and to the use of the inventive composition for producing dental restorations. 1. A composition to be used for attaching a dental facing on a dental support structure comprisinga. water,b. a glass and/or glass ceramic material,c. a rheological modifier with a molecular weight above about 500,000,wherein the glass and/or glass ceramic material is not able to undergo a cement reaction with a cross-linkable polyacid.2. The composition according to claim 1 , the composition being characterized by one or more of the following features:{'sup': '−1', 'Viscosity of composition not containing a glass and/or glass ceramic material: being in the range of about 10 to about 1,000 mPas, measured at a temperature of 23° C. with a shear rate s d(gamma)/dt of 50 s,'}can be combusted without leaving organic residues, if heated up to a temperature of about 750° C. for about 1 min at a pressure of 1013 mbar,content of organic components: being below about 7 wt.-%, wt.-% with respect to the weight of the whole composition.3. The composition according to claim 1 , comprising in addition one or more of the following components:polyethylene glycol with a molecular weight below about 10,000 andthickening agent selected from starch, methyl cellulose, ethyl cellulose, hydroxyl propyl cellulose, carboxy methyl cellulose, ...

COATED CHEWING GUM

Preformed dental composite crown, process of production and use thereof

The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety. The invention also relates to a kit of parts comprising such a preformed dental composite crown, ...

Coated chewing gum

The invention relates to a chewing gum coated with at least one layer, the layer comprising slightly water-soluble calcium salt and/or a composite thereof.

A METHOD AND SYSTEM FOR MAKING A DENTAL RESTORATION

A method and system for making a dental restoration are provided. The method comprises the step of providing a computer model of a three-dimensional reference surface that is based for example on a tooth structure of a tooth to be restored in a patient's dentition. The method further comprises the steps of visualizing the three-dimensional reference surface, providing a user operable virtual material deposition tool, and using the virtual material deposition tool to deposit a plurality of differently colored layers on the reference surface. The system provides functionality to perform the method of the invention. The invention preferably helps maximizing optical and geometrical quality in a dental restoration.

Multifunctional star-shaped prepolymers, their preparation and use

The present invention relates to coatings that possess a dynamic contact angle hysteresis in water, measured by means of a Wilhelmy balance according to DIN EN 14370, of at most 15 DEG, and are can be manufactured from star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes that are cross-linkable with one another and with the surface of the substrate to be coated, the star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes possessing, before being cross-linked, at least three hydrophilic polymer arms that, considered of themselves, are soluble in water, and that carry on all or on some of their free ends R1 silyl terminal groups of the following general formula (I): R1 is -CRa2-Si(ORb)r(Rc)3-r, where Ra denotes hydrogen or a linear or branched alkyl group having 1 to 6 carbon atoms, ORb denotes a hydrolyzable group, Rc denotes a linear or branched alkyl group having 1 to 6 carbon atoms, and r denotes a number from 1 to 3, and that carry, on the ...

Process for producing a dental appliance

The invention relates to a process for producing a dental appliance, the process comprising the steps of a) providing a mixture of a liquid, an inorganic binder precursor being able to undergo a sol/gel reaction and a glass or glass ceramic powder, b) casting the mixture into a mould, c) drying the cast mixture in the mould to obtain a machinable dental appliance, d) optionally machining the dental appliance to obtain a dental workpiece, e) optionally removing the dental appliance or dental workpiece from the mould, f) optionally sintering the dental appliance or dental workpiece and to a dental appliance obtainable by such a process.

CURABLE COMPOSITION FOR PRODUCING A DENTAL COMPOSITE CROWN AND PROCESS OF PRODUCTION

The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method. 1. A curable composition for producing dental composite crowns , the composition comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, and', 'polymerizable urethane(meth)acrylate(s),', 'wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety is in excess with respect to the polymerizable urethane(meth)acrylate(s),, 'a resin matrix comprising nanocluster(s),', 'optionally fumed silica in an amount below 8 wt. %,', 'wherein the filler matrix being present in an amount of 5 to 45 wt. %,, 'a filler matrix comprising photoinitiator(s), and', 'organic dye(s);, 'an initiator system comprisinga softener in an amount of no greater than 5 wt. %,{'sup': '−1', 'wherein the curable composition is characterized by a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s, and'}wherein wt. % is with respect to the weight of the curable composition.2. The curable composition of claim 1 ,the resin matrix being present in an amount of 40 to 85 wt. %,the initiator system being present in ...

USE OF A CLEAN COMPOSITION FOR 3D-PRINTED ARTICLES AND RELATED PROCESS

The invention relates to the use of a cleaning composition for removing uncured printing resin from 3D-printed articles, the cleaning composition comprising either of the following components alone or in combination: di basic esters of a carboxylic acid, tri basic esters of a carboxylic acid. The invention also relates to a process of cleaning a 3D-printed article, the process comprising the steps of a) providing the cleaning composition and a 3D-printed article comprising uncured printing resin on its surface, b) treating the surface of the 3D-printed article with the cleaning composition, c) optionally treating the 3D article with a solvent, in particular water, d) optionally drying the 3D article, optionally repeating steps b), c) and d) either singly or in combination. A further embodiment of the invention is directed to kit of parts comprising the cleaning composition and a 3D-printable resin composition, as well as a 3D-printing system comprising the cleaning composition, a 3D-printing device and a 3D-printable resin composition. 1. Use of a cleaning composition for removing uncured printing resin from a 3D-printed article , the cleaning composition comprising either of the following components alone or in combination:di basic esters of a carboxylic acid;tri basic esters of a carboxylic acid.2. The use according to claim 1 , the 3D-printed article comprising cured (meth)acrylate components and optionally fillers.3. The use according to claim 1 , the cleaning composition being characterized by at least one of the following features alone or in combination:having a pH value from 6 to 8, if brought in contact with wet pH sensitive paper;being miscible with water up to a ratio of 1 (composition):2 (water) by weight.4. The use according to claim 1 , the esters of carboxylic acid contained in the cleaning composition being characterized by at least one of the following features alone or in combination:having a boiling point above 150° C. (at 1013 hPa);having a vapor ...

Systems and methods for making layered dental appliances

A system and method for making a layered dental appliance. The system can include a first mold comprising a negative of a first layer of a layered dental appliance, a second mold comprising a negative of a second layer, and a dental core dimensioned to be at least partially received in the first mold and the second mold. The method can include positioning a first slurry in the first mold, and pressing the dental core into the first slurry to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the first mold, positioning a second slurry in the second mold, and pressing the first article into the second slurry to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

METHOD OF MAKING A DENTAL RESTORATION

A method of making a dental restoration has the steps of: determining a virtual space available for accommodation of a dental restoration for a tooth to be restored; retrieving a predefined virtual master dental restoration surface from a database; fitting the virtual master dental restoration surface in the space to provide a virtual outer dental restoration surface; creating a virtual inner dental restoration surface independent of a shape of the tooth to be restored; providing a virtual model of a dental restoration based on a combination of the virtual outer dental restoration surface and the virtual inner dental restoration surface; and fabricating the dental restoration based on the dental restoration model. 1. A method of making a dental restoration ,determining a virtual space available for accommodation of a dental restoration for a tooth to be restored by capturing the shape of a patient's teeth at least in an area adjacent the tooth to be restored;retrieving a predefined virtual master dental restoration surface from a database;fitting the virtual master dental restoration surface in the space by three-dimensionally transforming the virtual master dental restoration surface to provide a virtual outer dental restoration surface;creating a virtual inner dental restoration surface independent of a shape of the tooth to be restored;providing a virtual model of a dental restoration based on a combination of the virtual outer dental restoration surface and the virtual inner dental restoration surface; andfabricating the dental restoration based on the dental restoration model.2. The method of claim 1 , wherein the virtual inner dental restoration surface is automatically generated by a computer claim 1 , based on the virtual outer dental restoration surface.3. The method of claim 1 , wherein at least a portion of the virtual inner dental restoration surface is generated as a three-dimensional equidistant reduction of a corresponding portion of the virtual outer ...

COLOURING SOLUTION FOR DENTAL CERAMIC ARTICLES AND RELATED METHODS

The invention relates to a colouring solution for colouring a dental ceramic article, the solution comprising: a solvent and a colouring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/l solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/l solvent. The invention also relates to a process for colouring dental ceramic articles, dental ceramic articles treated either with the colouring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

DEVICE AND METHOD FOR PROGRESSIVELY BUILDING UP AN OBJECT FROM A LIGHT HARDENABLE MATERIAL

A device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography. 1. A device for progressively building up an object from a light hardenable material , comprising a perforated build platform for the object , the build platform forming a build surface that faces a light source , the build platform and the light source being positionable relative to each other by computer control , wherein the device is configured for supplying the light hardenable material through the perforation of the build platform for building up the object.2. The device of claim 1 , further comprising a receptacle for receiving the light hardenable material claim 1 , the receptacle having a first end that is closed by the build platform and an open second end and wherein the receptacle is arranged with the first end oriented toward the center of gravity and with the second open end away from the center of gravity.3. The device of claim 2 , wherein the second end is closed by a piston being movably arranged within the receptacle for urging the light hardenable material toward the perforation.4. The device of claim 2 , wherein a tank for the light hardenable material is provided for supplying the light hardenable material through the open second end into the receptacle.5. The device of claim 1 , further comprising a circumferential containment forming a hole within which the build platform can be positioned.6. The device of claim 5 , wherein the light source comprises a transparent plate on which the containment is disposed.7. The ...

COMPOSITION INCLUDING FLUOROPOLYMER AND INORGANIC FILLER AND METHOD OF MAKING A THREE-DIMENSIONAL ARTICLE

The method of making a three-dimensional article includes heating a composition comprising a fluoropolymer and inorganic filler, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a fluoropolymer and inorganic fillers is also described. The composition may be a filament. The composition can be useful, for example, in melt extrusion additive manufacturing. The fluoropolymer is semi-crystalline with a melting point of up to 325° C. and less than 50 percent by weight interpolymerized units of vinylidene fluoride or amorphous with a glass transition temperature of up to 280° C.

Colouring solution for dental ceramic articles and related methods

The invention relates to a coloring solution for coloring a dental ceramic article, the solution comprising: a solvent and a coloring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/1 solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/1 solvent. The invention also relates to a process for coloring dental ceramic articles, dental ceramic articles treated either with the coloring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

Dental milling block containing individualized dental article and process of production

The invention relates to a dental milling block (1) comprising a dental article (2) having an outer surface, the dental article having been produced based on personalized data, wherein the outer surface of the dental article is at least partially covered with a surrounding material. The invention further relates to a process of producing a dental milling block, the process comprising the steps of: ⋅a) providing a personalized Data Set C containing geometry data of the dental article and colour data related to said geometry data, ⋅b) generating a layer of hardenable material on a surface, ⋅c) applying a colour agent to the layer of hardenable material of step b), wherein the colour agent is applied to at least some regions of those areas of the layer of hardenable material which are related to the geometry data of the dental article, ⋅d) consolidating the result obtained in step c) thereby obtaining an at least partially hardened layer of material.

METHODS FOR MAKING LAYERED DENTAL APPLIANCES

Method for making a layered dental restoration, the method includes providing a solid structure (e.g., a die or a dental core, such as a fully sintered ceramic dental core) having a desired outer shape, and applying a first slurry to the solid structure to form a first free form layer on the solid structure. The method further include solidifying the first free form layer on the solid structure, and machining the solidified first free form layer to a desired shape to form a first article comprising the solid structure and a first shaped layer. The method can further include applying, solidifying, and machining a second layer in a similar way to form a second article comprising the solid structure, the first shaped layer, and a second shaped layer. The free form layers need not be exposed to a high temperature prior to being machined. 1. A method for making a layered dental appliance , the method comprising:providing a dental core having a desired outer shape;applying a slurry to the dental core to form a first free form layer on the dental core;solidifying the first free form layer on the dental core; andmachining the solidified first free form layer to a desired shape to form a first article comprising the dental core and a first shaped layer,wherein the solidified first free form layer is not fired prior to being machined.2. The method of claim 1 , wherein the dental core includes at least one of a ceramic claim 1 , a metal claim 1 , a metal alloy claim 1 , a precious metal claim 1 , a precious metal alloy claim 1 , and a combination thereof.3. The method of claim 1 , wherein the dental core is a fully sintered ceramic.46-. (canceled)76. The method of claim claim 1 , further comprising firing the article to form a layered dental appliance.816-. (canceled)17. The method of claim 1 , wherein applying a slurry includes dipping the dental core in the slurry.18. The method of claim 17 , wherein dipping includes positioning at least a portion of the dental core in the ...

DENTAL CERAMIC ARTICLE, PROCESS FOR PRODUCTION AND USE THEREOF

The invention relates to a dental article comprising two sections, section A and section B, section A having an upper and a lower surface portion, section A comprising zirconia in an amount of at least about 80 mol %, a stabilizer and a component X comprising Dy or Sm or Eu or mixtures thereof, section B comprising a glass, glass ceramic or composite material, section B being located above the upper surface portion of section A. 2. The dental restoration according to claim 1 , wherein the stabilizer is selected from components comprising Y claim 1 , Mg claim 1 , Ca claim 1 , Ce claim 1 , La and mixtures thereof.3. The dental restoration according to claim 1 , the stabilizer being present in an amount of about 1 to about 8 mol % with respect to section A.4. The dental restoration according to claim 1 , the amount of component X being in a range from about 0.1 to about 5 mol % with respect to section A (calculation based on the amount of oxide of the element referred to).5. The dental restoration according to claim 1 , the amount of stabilizer and component X being in a range of about 2 to about 10 mol % with respect to section A (calculation based on the amount of oxide of the element referred to).6. The dental restoration according to claim 1 , wherein section B meets at least one of the following parameters:comprising a section having a thickness of about 0.01 to about 3 mm;having an opacity of about 20% to about 90% (determined on a 0.5 mm thick sample);melting within a temperature range of about 500 to about 1000° C.;having a bending strength from about 50 to about 400 MPa (determined according to ISO 6872:2008).7. The dental restoration according to having the shape of a dental crown claim 1 , a dental bridge or abutment.8. The dental restoration according to claim 1 , wherein section A does not comprise components selected from Nd or Cu or Cr or Ti claim 1 , or combinations or mixtures thereof in an amount above about 0.012 wt % with respect to the weight of ...

METHODS FOR MAKING LAYERED DENTAL APPLIANCES

Methods for making a layered dental appliance. Some methods of the present disclosure can include providing a solid structure (e.g., a die or a dental core, such as a fully sintered ceramic dental core) having a desired outer shape, and applying a slurry to the solid structure to form a first free form layer on the solid structure. The slurry can include at least one of a glass and a glass ceramic. The method can further include firing the first free form layer on the solid structure, and machining the fired first free form layer to a desired shape to form a first article comprising the solid structure and a first shaped layer. Some methods can further include additional applying, firing, and machining steps to achieve a resulting dental appliance having a desired number of layers. Some methods can include removing the solid structure. 1. A method for making a layered dental appliance , the method comprising:providing a dental core having a desired outer shape;applying a slurry to the dental core to form a first free form layer on the dental core, the slurry comprising at least one of a glass and a glass ceramic;firing the first free form layer on the dental core; andmachining the fired first free form layer to a desired shape to form a first article comprising the dental core and a first shaped layer.2. The method of claim 1 , wherein the dental core includes at least one of a fully sintered ceramic claim 1 , a metal claim 1 , a metal alloy claim 1 , a precious metal claim 1 , a precious metal alloy claim 1 , and a combination thereof.3. The method of claim 1 , wherein applying a slurry to the dental core to form a first free form layer includes forming a first free form layer having no prescribed outer shape.4. The method of claim 1 , wherein the slurry has a viscosity such that the first free form layer does not flow off of the dental core before being fired.5. The method of claim 1 , further comprising rotating the dental core while the slurry is applied.6. The ...

DENTAL CERAMIC ARTICLE, PROCESS OF PRODUCTION AND USE THEREOF

The present disclosure relates to a dental ceramic article comprising ceramic components, the ceramic components having ZrO2 and Al2O3 and at least one component comprising Mn, Er or mixtures thereof, Al2O3 being present in an amount below about 0.15 wt.-% with respect to the weight of the ceramic article. The present disclosure relates also to kit of parts comprising a ceramic article and a colouring solution and processes for producing a dental ceramic article. 1. A dental ceramic article comprising ceramic components , the ceramic components comprising ZrO2 and Al2O3 and colouring components comprising ions or oxides of Mn , Er , or mixtures thereof , Al2O3 being present in an amount from about 0.0001 to about 0.14 wt.-% with respect to the weight of the ceramic components.3. The dental ceramic article according to comprising a stabilizer selected from oxides of Y claim 1 , Mg claim 1 , Ca claim 1 , Ce claim 1 , La and mixtures thereof.4. The dental ceramic article according to having the shape of a dental support structure claim 1 , a dental crown claim 1 , a dental bridge claim 1 , a dental facing claim 1 , an inlay claim 1 , an onlay claim 1 , a mill blank claim 1 , an implant or of an abutment.5. The dental ceramic article according to being contained in a frame or comprising a holding device.6. The dental ceramic article according to being in a pre-sintered stage and being characterized by at least one of the following features:raw breaking resistance: from about 5 to about 55 MPa,{'sup': '3', 'density: from about 2.4 to about 3.7 g/cm,'}porosity: from about 40 to about 60 vol.-%.7. The dental ceramic article according to being in a sintered stage and being characterized by at least one of the following features:breaking resistance: at least about 400 MPa,{'sup': '3', 'density: from about 5.9 to about 6.1 g/cm,'}fluorescence emission in the region of the visible light.8. A kit of parts comprising at least one dental ceramic article and at least one colouring ...

Method of capturing data from a patient's dentition and system for performing such method

A method of capturing data from a patient's dentition with the steps of positioning a first optical sensor relative to patient's dentition, capturing the shape of a tooth in the patient's dentition, independent from capturing the shape, measuring a color at a location on the tooth, and providing a correlation between the location of the color and a coordinate in the captured shape. The invention helps providing a dental restoration at a relatively high optical, mechanical, and geometric quality.

METHOD AND SYSTEM FOR MAKING A DENTAL RESTORATION

A method and system for making a dental restoration are provided. The method comprises the step of providing a computer model of a three-dimensional reference surface that is based for example on a tooth structure of a tooth to be restored in a patient's dentition. The method further comprises the steps of visualizing the three-dimensional reference surface, providing a user operable virtual material deposition tool, and using the virtual material deposition tool to deposit a plurality of differently colored layers on the reference surface. The system provides functionality to perform the method of the invention. The invention preferably helps maximizing optical and geometrical quality in a dental restoration. 1. A method of making a dental restoration , the method comprising the steps of: ["a tooth structure of a tooth to be restored in a patient's dentition, and", 'a dental restoration for the tooth,, 'providing a computer model of a three-dimensional reference surface that is based on a shape of at least one ofvisualizing the three-dimensional reference surface;providing a user operable virtual material deposition tool;using the virtual material deposition tool to deposit a plurality of computer simulated layers relative to the reference surface;assigning at least two of the plurality of computer simulated layers different tooth colors;assigning at least one of the plurality of layers with a virtual material thickness;assigning at least one of the plurality of layers with a virtual dimension lateral to the thicknessdetermining a position relative to the reference surface or relative to a deposited layer;positioning the virtual material deposition tool toward the determined position;activating the virtual material deposition tool for depositing one of the plurality of layers at the determined position;visualizing one or both neighboring teeth with a simulation of color shading and translucency gradient during the activating step;providing a computer model of the ...

SOL CONTAINING NANO ZIRCONIA PARTICLES FOR USE IN ADDITIVE MANUFACTURING PROCESSES FOR THE PRODUCTION OF 3-DIMENSIONAL ARTICLES

The invention relates to the use of a printing sol as construction material in an additive manufacturing process for producing a 3-dim article, the printing sol comprising solvent(s), nano-sized crystalline zirconia particles in an amount from 2 to 25 vol.-% with respect to the volume of the sol, the average primary particle size of the nano-sized crystalline zirconia particles being in a range up to 50 nm, a first monomer being a polymerizable surface modification agent represented by formula A-B, with A being capable of attaching to the surface of the nano-sized crystalline zirconia particles and B being a radiation curable group, optionally a second monomer, the second monomer comprising at least one radiation curable moiety but no acidic or silane group(s), photo initiator(s). The invention also relates to a ceramic article obtainable according to such a process. 1. Use of a printing sol as construction material in an additive manufacturing process for producing a [3-dim] three-dimensional article , the printing sol comprising:solvent(s);nano-sized crystalline zirconia particles in an amount from 2 to 25 vol.-% with respect to the volume of the sol, the average primary particle size of the nano-sized crystalline zirconia particles being in a range up to 50 nm;a first monomer being a polymerizable surface modification agent represented by formula A-B, with A being capable of attaching to the surface of the nano-sized crystalline zirconia particles and B being a radiation curable group;optionally a second monomer, the second monomer comprising at least one radiation curable moiety but no acidic or silane group(s); andphotoinitiator(s).2. The use of claim 1 , the printing sol being characterized by at least one or all of the following features:being translucent in a wave length range from 420 to 600 nm for a path length of 10 mm;showing a transmission of at least 5% at 420 nm determined for a path length of 10 mm;the sol having a viscosity of less than 500 mPa*s at ...

Dental Mill Blank of a Porous Zirconia Material Containing Oxides of Tb, Er and Cr, Process of Producing and Use Thereof

The present invention relates to a dental zirconia mill blank comprising a porous zirconia material, the porous zirconia material comprising Zr oxide, Y oxide, optionally Al oxide, Bi oxide, Tb oxide, Er oxide, Cr oxide, the porous zirconia material not comprising Fe oxide calculated as FeOof more than 0.01 wt. %, Mn oxide calculated as MnOof more than 0.005 wt. %, Co oxide calculated as CoOof more than 0.005 wt. %, wt. % with respect to the weight of the porous zirconia material. The invention also relates to a process of producing such a dental zirconia mill blank and a dental restoration which can be machined from the dental zirconia mill blank. Further, the invention relates to a kit of parts comprising such a dental zirconia mill blank and a dental cement. 1. A process of producing a dental mill blank comprising a porous zirconia material ,the porous zirconia material comprising Zr oxide, Y oxide, optionally Al oxide, Bi oxide, Tb oxide, Er oxide, and Cr oxide, [{'sub': 2', '3, 'Fe oxide calculated as FeOof more than 0.01 wt. %,'}, {'sub': '2', 'Mn oxide calculated as MnOmore than 0.005 wt. %,'}, {'sub': 2', '3, 'Co oxide calculated as CoOof more than 0.005 wt. %,'}], 'the porous zirconia material not comprising'}wt. % with respect to the weight of the porous zirconia material providing a zirconia powder comprising Tb oxide,', 'providing a zirconia powder comprising Er oxide,', 'providing a zirconia powder comprising Cr oxide,', 'providing a zirconia powder comprising Bi oxide,', 'providing a zirconia powder not comprising oxides of Tb, Er, Cr and Bi,', 'mixing and/or layering the zirconia powders described above,', 'compacting the layered and/or mixed zirconia powders,', 'optionally applying a heat-treatment step,, 'the process comprising the steps of'}the zirconia powders comprising Zr oxide, Y oxide and optionally Al oxide, none of the zirconia powders or the dental mill blank comprising Fe oxide in an amount of more than 0.01 wt. %, Mn and Co oxides each in ...

Additive manufacturing process for producing ceramic articles using a sol containing nano-sized particles

The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23° C., processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.

AEROGELS, CALCINED AND CRYSTALLINE ARTICLES AND METHODS OF MAKING THE SAME

Aerogel, calcined articles, and crystalline articles comprising ZrO. Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons). 1. A crack-free , calcined metal oxide article having x , y , and z dimensions of at least 5 mm , a density in a range from 30 to 95 percent of theoretical density , and an average connected pore size in a range from 10 nm to 100 nm , wherein at least 70 mole percent of the metal oxide is crystalline ZrO , and wherein the crystalline ZrOhas an average grain size less than 100 nm.2. The crack-free claim 1 , calcined metal oxide of claim 1 , wherein the crack-free claim 1 , calcined metal oxide article has x claim 1 , y claim 1 , and z dimensions of at least 10 mm.3. The crack-free claim 1 , calcined metal oxide of claim 1 , wherein at least 75 mole percent of the crystalline metal oxide present in the crack-free claim 1 , calcined metal oxide article is crystalline ZrO.4. The crack-free claim 1 , calcined metal oxide of claim 1 , wherein the crystalline metal oxide comprises in a range from 1 to 15 (in some embodiments claim 1 , 1 to 9 claim 1 , 1 to 5 claim 1 , 6 to 9 3.5 to 4.5 claim 1 , or even 7 to 8) mole percent of the crystalline metal oxide is YO.5. The crack-free claim 1 , calcined metal oxide of claim 1 , wherein the crystalline metal oxide further comprises at least one of YOor LaO.6. The crack-free claim 1 , calcined metal oxide of claim 1 , wherein the crystalline metal oxide further comprises at least one of CeO claim 1 , PrO claim 1 , NdO claim 1 , PmO claim 1 , SmO claim 1 , EuO claim 1 , GdO claim 1 , TbO claim 1 , DyO claim 1 , HoO claim 1 , ErO claim 1 , TmO claim 1 , YbO claim 1 , FeO claim 1 , MnO claim 1 , CoO ...

RESTORATION, RESTORATION COMPONENTS, AND METHODS OF MAKING A DENTAL RESTORATION

A method is provided for making a dental restoration at a certain tooth color shade. The method comprises joining a veneer precursor, a framework and a compensation material to form the dental restoration. The tooth color shade is selected from among a continuous range of tooth color shades, but individual components of the dental restoration may be selected from discrete color shades. Further, a dental restoration, a kit and a use of the kit are provided in accordance with the invention. 1. A method of making a dental restoration , the dental restoration having a tooth color shade D selected from among a continuous range of tooth color shades; the method comprising the steps of:providing a framework having a pre-determined framework color shade A;providing a veneer precursor having a pre-determined veneer color shade C selected from among a set of discrete color shades;providing a compensation material having a compensation material color shade B based in part on the pre-determined framework color shade A and pre-determined veneer color shade C, wherein the compensation material color shade B is selected from among a continuous range of color shades; andjoining the veneer precursor, the framework and the compensation material to form the dental restoration,wherein the compensation material color shade B is selected such that together with the veneer color shade C and the framework color shade A, the dental restoration approximates the desired tooth color shade D.2. The method of claim 1 , wherein the veneer precursor is substantially comprised of pre-sintered glass-ceramic particles.3. The method of claim 1 , wherein the veneer precursor is substantially comprised of sintered glass-ceramic.4. The method of claim 1 , wherein the step of joining the veneer precursor claim 1 , the framework and the compensation material comprises the steps of:applying the compensation material to at least one of the framework and the veneer precursor to form a dental restoration ...

RADIATION-CURABLE COMPOSITION CONTAINING MERCAPTO-FUNCTIONAL POLYORGANOSILOXANES FOR ADDITIVE-MANUFACTURING TECHNOLOGY

The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D, and at least one of the following as Component E: solvent being able to dissolve the dye(s); and/or surfactant(s) being able to dissolve the dye(s). 1. A radiation-curable silicone composition for additive-manufacturing technology , the radiation-curable silicone comprisingmercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B,photo initiator(s) as Component C for initiating a curing reaction between Component A and Component B,dye(s) as Component D, and solvent being able to dissolve the dye(s); and/or', 'surfactant(s) being able to dissolve the dye(s)., 'at least one of the following as Component E2. The radiation-curable silicone composition of claim 1 , wherein the dye is characterized by the following features alone or in combination:solubility: at least 0.5 wt. % at 50° C. in polyethylene glycol with an Mn of 400 g/mol;having a light absorption maximum in the range of 460 to 600 nm;comprising a perylene moiety;color: red, orange or yellow;amount: being present from 0.001 to 1 wt. % with respect to the weight of the whole radiation-curable composition.3. The radiation-curable silicone composition of claim 1 , wherein the mercapto-functional polyorganosiloxane is characterized by the following features alone or in combination:fraction of (mercaptoalkyl)methylsiloxane units: 7-100 mol-%; {'br': None, 'sub': 3', '2', '1/2', 'w', '3', '3', '1/2', 'x', '3', '2', 'y', '3', 'z, '[(CH)RSiO][(CH)SiO][(CH)SiO][R(CH)SiO],'}, 'being characterized by the following formula{'sub': '1-10', ...

AEROGELS, CALCINED AND CRYSTALLINE ARTICLES AND METHODS OF MAKING THE SAME

Aerogel, calcined articles, and crystalline articles comprising ZrO. Exemplary uses of the crystalline metal oxide articles include dental articles (e.g., restoratives, replacements, inlays, onlays, veneers, full and partial crowns, bridges, implants, implant abutments, copings, anterior fillings, posterior fillings, and cavity liner, and bridge frameworks) and orthodontic appliances (e.g., brackets, buccal tubes, cleats, and buttons). 1. An monolithic aerogel comprising organic material and crystalline metal oxide particles , wherein the crystalline metal oxide particles are in a range from 3 to 20 volume percent , based on the total volume of the monolithic aerogel , wherein at least 70 mole percent of the crystalline metal oxide is ZrO.2. The monolithic aerogel of claim 1 , wherein the crystalline metal oxide particles are in a range from 1 to 15 mole percent of the crystalline metal oxide is YO.3. The monolithic aerogel of claim 1 , wherein the crystalline metal oxide particles comprise a first plurality of particles claim 1 , and a second claim 1 , different plurality of particles.4. A method of making a crack-free claim 1 , calcined metal oxide article having x claim 1 , y claim 1 , and z dimensions of at least 5 mm claim 1 , a density in as range from 30 to 95 percent of theoretical density claim 1 , and an average connected pore size in a range from 10 nm to 100 nm claim 1 , wherein at least 70 mole percent of the metal oxide is crystalline ZrO claim 1 , and wherein the crystalline ZrOhas an average grain size less than 100 nm claim 1 , the method comprising heating the monolithic aerogel of for a time and at at least one temperature sufficient to provide the crack-free claim 1 , calcined metal oxide article.5. The method of further comprising chemically treating the calcined metal oxide article to remove volatile ions.6. A method of making the aerogel comprising organic material and crystalline metal oxide particles claim 4 , wherein the crystalline metal ...

DENTAL BLANK COMPRISING A PRE-SINTERED POROUS ZIRCONIA MATERIAL, PROCESS OF ITS PRODUCTION AND DENTAL ARTICLE FORMED FROM SAID DENTAL BLANK

The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process. 1. A dental mill blank comprising a pre-sintered porous zirconia material ,the porous pre-sintered zirconia material showing a N2 adsorption and/or desorption of isotherm type IV according to IUPAC classification,the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150,the dental mill blank comprising means for reversible attaching it to a machining device.2. The dental mill blank of claim 1 , the porous pre-sintered zirconia material being characterized by at least one of the following features:showing a nitrogen adsorption and desorption isotherm with hysteresis loop;showing a hysteresis loop of type H1 according to IUPAC classification;{'sub': '0', 'showing a N2 adsorption and desorption isotherm with a hysteresis loop in a p/prange of 0.70 to 0.95;'}average connected pore diameter: from about 10 to about 100 nm;average grain size: less than about 100 nm;{'sup': '2', 'BET surface: from about 10 to about 200 m/g;'}Biaxial flexural strength: from about 10 to about 40;x, y, z dimension: at least about 5 mm;Vickers hardness: from about 25 to about 150;density: about 30 to about 95% of theoretical density;having an isotropic shrinkage behaviour.3. The dental mill blank according to claim 2 , the porous pre- ...

A dental coloring stamp and a method of coloring

A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open-celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.

COMPOSITIONS INCLUDING POLYMER AND HOLLOW CERAMIC MICROSPHERES AND METHOD OF MAKING A THREE-DIMENSIONAL ARTICLE

The method of making a three-dimensional article includes heating a composition comprising a polymer and hollow ceramic microspheres, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a polymer and hollow ceramic microspheres is also described. The composition may be a filament. The polymer is at least one of a low-surface-energy polymer or polyolefin. The composition can be useful, for example, in melt extrusion additive manufacturing, for example, fused filament fabrication.

COMPOSITION INCLUDING FLUOROPOLYMER AND INORGANIC FILLER AND METHOD OF MAKING A THREE-DIMENSIONAL ARTICLE

The method of making a three-dimensional article includes heating a composition comprising a fluoropolymer and inorganic filler, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a fluoropolymer and inorganic fillers is also described. The composition may be a filament. The composition can be useful, for example, in melt extrusion additive manufacturing. The fluoropolymer is semi-crystalline with a melting point of up to 325° C. and less than 50 percent by weight interpolymerized units of vinylidene fluoride or amorphous with a glass transition temperature of up to 280° C. 1. A method of making a three-dimensional article , the method comprising:heating a composition comprising an inorganic filler and a fluoropolymer;extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three dimensional article; andextruding at least a second layer of the composition in molten form onto at least the portion of the first layer to make at least a portion of the three dimensional article,wherein the fluoropolymer is a semi-crystalline fluorothermoplastic and has a melting point of up to 325° C. and less than 50 percent by weight interpolymerized units of vinylidene fluoride or wherein the fluoropolymer is amorphous and has a glass transition temperature of up to 280° C.2. The method of claim 1 , wherein the fluoropolymer comprises interpolymerized units from at least one partially fluorinated or perfluorinated ethylenically unsaturated monomer represented by formula RCF═CR claim 1 , wherein each R is independently fluoro claim 1 , chloro claim 1 , bromo claim 1 ...

Filament based on a composition including fluoropolymer and inorganic filler and method of making a three-dimensional article

Radiation-curable composition containing mercapto-functional polyorganosiloxanes for additive-manufacturing technology

The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D, and at least one of the following as Component E: solvent being able to dissolve the dye(s); and/or surfactant(s) being able to dissolve the dye(s).

CURABLE COMPOSITION FOR THE PRODUCTION OF A DENTAL COMPOUND CROWN AND PRODUCTION PROCESS

A invenção se refere à composição curável para produzir coroas de compósito dental, sendo que a composição compreende uma matriz de resina compreendendo (met)acrilato(s) polimerizável(is) que não compreende(m) uma porção de uretano, (met)acrilato(s) de uretano polimerizável(is), em que o(s) (met)acrilato(s) polimerizável(is) que não compreende(m) uma porção de uretano são usados em excesso em relação ao(s) (met)acrilato(s) de uretano polimerizável(is), uma matriz de enchimento compreendendo nanoaglomerado(s), sílica pirolisada em uma quantidade abaixo de 8% em peso em relação ao peso da composição inteira, um sistema iniciador que compreende fotoiniciador(es), corante(s) orgânico(s), onde a composição curável não compreende amaciante em uma quantidade maior do que 5% em peso em relação ao peso total da composição, tendo a composição curável uma viscosidade abaixo de 150 Pa.s a 23°C e uma taxa de cisalhamento de 1 s-1. A invenção também se refere a um artigo curado obtido pela cura por radiação desta composição curável mediante o uso de um método de fabricação aditivo. The invention relates to the curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth) acrylate (s) that does not comprise (u) a portion of urethane, (meth) acrylate polymerizable urethane (s), wherein the polymerizable (meth) acrylate (s) that do not comprise a portion of urethane are used in excess of the (met) polymerizable urethane acrylate (s), a filler matrix comprising nanoagglomerate (s), pyrolysed silica in an amount below 8% by weight relative to the weight of the entire composition, an initiator system comprising photoinitiator (s), organic dye (s), where the curable composition does not comprise softener in an amount greater than 5% by weight relative to the total weight of the composition, the curable composition having a viscosity below 150 Pa.sa 23 ° C and a shear rate of 1 s-1. The invention also relates to a ...

Dental blank comprising a pre-sintered porous zirconia material, process of its production and dental article formed from said dental blank

The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process.

Dental ceramic article, process for production and use thereof

The invention relates to a dental article comprising two sections, section A and section B, section A having an upper and a lower surface portion, section A comprising zirconia in an amount of at least about 80 mol%, a stabilizer and a component X comprising Dy or Sm or Eu or mixtures thereof, section B comprising a glass, glass ceramic or composite material, section B being located above the upper surface portion of section A. The invention also relates to a process for producing such an article, a kit of parts and the use of blanks for producing such an article.

Curable composition for producing a dental composite crown and process of production

The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt.% with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt.% with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23°C and a shear rate of 1s -1 . The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

Compositions including polymer and hollow ceramic microspheres and method of making a three-dimensional article

The method of making a three-dimensional article includes heating a composition comprising a polymer and hollow ceramic microspheres, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a polymer and hollow ceramic microspheres is also described. The composition may be a filament. The polymer is at least one of a low-surface-energy polymer or polyolefin. The composition can be useful, for example, in melt extrusion additive manufacturing, for example, fused filament fabrication.

Dental mill blank of a porous zirconia material containing oxides of tb, er and cr, process of producing and use thereof

The present invention relates to a dental zirconia mill blank comprising a porous zirconia material, the porous zirconia material comprising Zr oxide, Y oxide, optionally Al oxide, Bi oxide, Tb oxide, Er oxide, Cr oxide, the porous zirconia material not comprising Fe oxide calculated as Fe 2 O 3 of more than 0.01 wt.%, Mn oxide calculated as MnO 2 of more than 0.005 wt.%, Co oxide calculated as Co 2 O 3 of more than 0.005 wt.%, wt.% with respect to the weight of the porous zirconia material. The invention also relates to a process of producing such a dental zirconia mill blank and a dental restoration which can be machined from the dental zirconia mill blank. Further, the invention relates to a kit of parts comprising such a dental zirconia mill blank and a dental cement.

Systems and methods for making layered dental appliances

A system and method for making a layered dental appliance. The system can include a first mold comprising a negative of a first layer of a layered dental appliance, a second mold comprising a negative of a second layer, and a dental core dimensioned to be at least partially received in the first mold and the second mold. The method can include positioning a first slurry in the first mold, and pressing the dental core into the first slurry to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the first mold, positioning a second slurry in the second mold, and pressing the first article into the second slurry to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

System and method for washing a 3d-printed object

A system (1) for washing a 3D-printed object (4). The system (1) has a washing device (2) and a workpiece (3) that includes the 3D-printed object (4). The washing device (2) has a container (7) that forms a process chamber (8) for receiving a liquid cleaning agent (9), and the container (7) has an inlet (10) into the process chamber (8). The workpiece (3) further has a support structure (6) that supports the 3D-printed object (4) and a base (5) supporting the support structure (6). The base (5), in a mating relationship with the inlet (10), forms a restraint preventing the workpiece (3) from passing through the inlet (10) in a situation in which the workpiece (3) is placed with the 3D- printed object (4) located within the process chamber (8).

Dental mill blank of a porous zirconia material containing oxides of tb, er and cr, process of producing and use thereof

The present invention relates to a dental zirconia mill blank comprising a porous zirconia material, the porous zirconia material comprising Zr oxide, Y oxide, optionally Al oxide, Bi oxide, Tb oxide, Er oxide, Cr oxide, the porous zirconia material not comprising Fe oxide calculated as Fe 2 O 3 of more than 0.01 wt.%, Mn oxide calculated as MnO 2 of more than 0.005 wt.%, Co oxide calculated as Co 2 O 3 of more than 0.005 wt.%, wt.% with respect to the weight of the porous zirconia material. The invention also relates to a process of producing such a dental zirconia mill blank and a dental restoration which can be machined from the dental zirconia mill blank. Further, the invention relates to a kit of parts comprising such a dental zirconia mill blank and a dental cement.

Restoration, restoration components, and methods of making a dental restoration

A method is provided for making a dental restoration at a certain tooth color shade. The method comprises joining a veneer precursor, a framework and a compensation material to form the dental restoration. The tooth color shade is selected from among a continuous range of tooth color shades, but individual components of the dental restoration may be selected from discrete color shades. Further, a dental restoration, a kit and a use of the kit are provided in accordance with the invention.

ceramic dental article and process for producing ceramic dental article

Restoration, restoration components, and methods of making a dental restoration

A method is provided for making a dental restoration at a certain tooth color shade. The method comprises joining a veneer precursor, a framework and a compensation material to form the dental restoration. The tooth color shade is selected from among a continuous range of tooth color shades, but individual components of the dental restoration may be selected from discrete color shades. Further, a dental restoration, a kit and a use of the kit are provided in accordance with the invention.

Systems and methods for making layered dental appliances from the outside in

A system and method for making a layered dental appliance. The system can include a first portion comprising a negative of a first layer of a layered dental appliance, and a second portion comprising a positive shape of a second layer of the layered dental appliance. The method can include providing a mold comprising a negative of an outer shape of a layered dental appliance, and positioning a slurry in the mold, forming a first layer of the layered dental appliance. The method can further include providing a solid structure comprising a positive shape of a second layer of the layered dental appliance, and pressing the solid structure into the slurry in the mold.

Set of colored porous zirconia dental mill blanks and process of production

The invention relates to a set of porous zirconia dental mill blanks comprising at least two differently colored porous zirconia dental mill blanks, the porous zirconia dental mill blanks comprising zirconia, yttria, coloring ions, and optionally alumina, comprising multiple layers with different yttria content, having a bottom layer and a top layer, the content of yttria and coloring ions in mol% changing in opposite direction to each other from the bottom layer to the top layer, and the content of yttria and coloring ions in mol% being adjusted to provide an essentially constant ratio of the sum of yttria and coloring ions in mol% between the top layer and the bottom layer for the at least two differently colored zirconia dental mill blanks. The invention also relates to a process of producing such a set.

Multifunctional star-shaped prepolymers, their preparation and use

The present invention relates to coatings that possess a dynamic contact angle hysteresis in water, measured by means of a Wilhelmy balance according to DIN EN 14370, of at most 15°, and are can be manufactured from star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes that are cross-linkable with one another and with the surface of the substrate to be coated, the star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes possessing, before being cross-linked, at least three hydrophilic polymer arms that, considered of themselves, are soluble in water, and that carry on all or on some of their free ends R 1 silyl terminal groups of the following general formula (I): R 1 is —CR a 2 —Si(OR b ) r (R c ) 3-r , where R a denotes hydrogen or a linear or branched alkyl group having 1 to 6 carbon atoms, OR b denotes a hydrolyzable group, R c denotes a linear or branched alkyl group having 1 to 6 carbon atoms, and r denotes a number from 1 to 3, and that carry, on the optionally present ends not carrying silyl terminal groups, reactive groups that are reactive with respect to themselves, the substrate to be coated, entities optionally introduced into the coating, and/or with the silyl terminal groups. The present invention furthermore relates to a method for manufacturing such coatings, and to star-shaped prepolymers that are used in the coatings. The invention moreover relates to use of the star-shaped prepolymers as additives to various agents for temporary or permanent anti-soiling finishing of surfaces.

Additive manufacturing process for producing ceramic articles using a sol containing nano-sized particles

Prefabricated crown with snap-on features

Dental crowns having securing protrusions, methods of preparing said dental crowns, and methods of repairing a tooth with said dental crowns are described.

Homogeneous, storage-resistant dispersions

The invention relates to homogeneous, storage-resistant dispersions of calcium salts that are poorly soluble in water and/or polymers with at least one surfactant.

Radiation-curable composition containing mercapto-functional polyorganosiloxanes for additive-manufacturing technology

The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D, and at least one of the following as Component E: solvent being able to dissolve the dye(s); and/or surfactant(s) being able to dissolve the dye(s).

Περικαλυμμενη τσικλα

Η εφεύρεση αφορά μια τσίκλα, η οποία περιβάλλεται από μια στρώση, όπου η στρώση αυτή περιλαμβάνει ένα δυσδιάλυτο σε νερό άλας ασβεστίου και/ή τα σύνθετα προϊόντα του.

Umhüllter kaugummi

Set of colored porous zirconia dental mill blanks and process of production

The invention relates to a set of porous zirconia dental mill blanks comprising at least two differently colored porous zirconia dental mill blanks, the porous zirconia dental mill blanks comprising zirconia, yttria, coloring ions, and optionally alumina, comprising multiple layers with different yttria content, having a bottom layer and a top layer, the content of yttria and coloring ions in mol % changing in opposite direction to each other from the bottom layer to the top layer, and the content of yttria and coloring ions in mol % being adjusted to provide an essentially constant ratio of the sum of yttria and coloring ions in mol % between the top layer and the bottom layer for the at least two differently colored zirconia dental mill blanks. The invention also relates to a process of producing such a set.

System and method for washing a 3d-printed object

A dental coloring stamp and a method of coloring

A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open- celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.

Systems and methods for making layered dental appliances

A system and method for making a layered dental appliance. The system can include a mold comprising a negative of an outer shape of a layered dental appliance, and a dental core dimensioned to be at least partially received in the mold. The method can include positioning a first slurry in the mold, and pressing the dental core into the first slurry in the mold to form a first article comprising the dental core and a first layer formed from the first slurry. The method can further include removing the first article from the mold, and firing the first article. The method can further include positioning a second slurry in the mold, and pressing the first article into the second slurry in the mold to form a second article comprising the dental core, the first layer, and a second layer formed from the second slurry.

A method of making a customized dental blank

A method of making a customized dental blank. The method has steps of obtaining from a dental practitioner a first color scheme and a different second color scheme as well as a first dimensional information for the first color scheme and a different second dimensional information for the second color scheme. The first and second dimensional information each relate to a size and/or a location within dimensions of the dental blank. The method further has the step of manufacturing the customized dental blank which has a first portion based on the first dimensional information according to the first color scheme and a second portion based on the second dimensional information according to the second color. Further the method has the step of providing the dental practitioner with the customized dental blank. The method helps facilitating the making of a dental restoration from a blank.

A dental coloring stamp and a method of coloring

A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open- celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.

A method of capturing data from a patient's dentition and system for performing such method

A method of capturing data from a patient's dentition with the steps of positioning a first optical sensor relative to patient's dentition, capturing the shape of a tooth in the patient's dentition, independent from capturing the shape, measuring a color at a location on the tooth, and providing a correlation between the location of the color and a coordinate in the captured shape. The invention helps providing a dental restoration at a relatively high optical, mechanical, and geometric quality.

A method of capturing data from a patient's dentition

Zusammensetzung zur befestigung einer zahnverblendung auf einer zahnstützstruktur, verfahren und verwendung davon

composição para a fixação de um revestimento, kit para a fixação de um revestimento dental, processos, restauração dentaria e uso de uma composição

Kompositmaterialien aus calciumverbindungen und glucuronsäurehaltigen polysacchariden

Curable composition for producing a dental composite crown and process of production

The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s −1 . The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

Calcium enthaltende süssigkeit

Calciumsalz enthaltender kaugummi

Use of a cleaning composition for 3d-printed articles and related process

The invention relates to the use of a cleaning composition for removing uncured printing resin from 3D-printed articles, the cleaning composition comprising either of the following components alone or in combination: di basic esters of a carboxylic acid, tri basic esters of a carboxylic acid. The invention also relates to a process of cleaning a 3D-printed article, the process comprising the steps of a) providing the cleaning composition and a 3D-printed article comprising uncured printing resin on its surface, b) treating the surface of the 3D-printed article with the cleaning composition, c) optionally treating the 3D article with a solvent, in particular water, d) optionally drying the 3D article, optionally repeating steps b), c) and d) either singly or in combination. A further embodiment of the invention is directed to kit of parts comprising the cleaning composition and a 3D-printable resin composition, as well as a 3D-printing system comprising the cleaning composition, a 3D-printing device and a 3D-printable resin composition.

Colouring solution for dental ceramic articles and related methods

The invention relates to a colouring solution for colouring a dental ceramic articles, the solution comprising: a solvent and a colouring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/l solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/l solvent. The invention also relates to a process for colouring dental ceramic articles, dental ceramic articles treated either with the colouring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

Kompositmaterialien aus calciumverbindungen und glucuronsäure- und/oder iduronsäurehaltigen polysacchariden

Dental appliance, process for producing a dental appliance and use thereof

The invention relates to a process for producing a dental appliance, the process comprising the steps of a) providing a mixture of a liquid, an inorganic binder precursor being able to undergo a sol/gel reaction and a glass or glass ceramic powder, b) casting the mixture into a mould, c) drying the cast mixture in the mould to obtain a machinable dental appliance, d) optionally machining the dental appliance to obtain a dental workpiece, e) optionally removing the dental appliance or dental workpiece from the mould, f) optionally sintering the dental appliance or dental workpiece and to a dental appliance obtainable by such a process.

Colouring solution for dental ceramic articles and related methods

The invention relates to a colouring solution for colouring a dental ceramic articles, the solution comprising: a solvent and a colouring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/l solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/l solvent. The invention also relates to a process for colouring dental ceramic articles, dental ceramic articles treated either with the colouring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

Composition for attaching a dental facing on a dental support structure, process and use thereof

The present invention relates to a composition for attaching a dental facing on a dental support structure comprising water, a glass and/or glass ceramic material, a rheological modifier with a molecular weight above about 500,000. The invention also relates to a process comprising the steps: providing a dental facing precursor and a dental support structure, both having an upper and a lower surface, attaching the dental facing precursor with its lower surface to the upper surface of the dental support structure, comprising the step of placing a mating composition between the lower surface of the dental facing precursor and the upper surface of the dental support structure and to the use of the inventive composition for producing dental restorations.

Färbungslösung für dentale keramikartikel und entsprechende verfahren

Additive manufacturing process for producing ceramic articles using a sol containing nano-sized particles

The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23°C, processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.

Set of colored porous zirconia dental mill blanks and process of production

The invention relates to a set of porous zirconia dental mill blanks comprising at least two differently colored porous zirconia dental mill blanks, the porous zirconia dental mill blanks comprising zirconia, yttria, coloring ions, and optionally alumina, comprising multiple layers with different yttria content, having a bottom layer and a top layer, the content of yttria and coloring ions in mol% changing in opposite direction to each other from the bottom layer to the top layer, and the content of yttria and coloring ions in mol% being adjusted to provide an essentially constant ratio of the sum of yttria and coloring ions in mol% between the top layer and the bottom layer for the at least two differently colored zirconia dental mill blanks. The invention also relates to a process of producing such a set.