Imprоvеd аllоу bаsеd оn nоblе mеtаls аnd suitаblе fоr lоw-mеlting сеrаmiс lining соmprisеs pаllаdium, silvеr, gоld, ruthеnium, zinс, tin аnd indium

The available invention concerns a new Dentallegierung on precious metal basis, which indigkeit under Erfellung of the characteristics demanded in the appropriate standards hinsichUich mechanical firmness, Korrosionsbest, workability in the Dentallabor etc. a particularly low gold content exhibits. Areas of application f (Jr the new Dentallegierung are crowns, Bracken, Inlays and Prothetikarbeiten. The new alloy can be dazzled in dentaltechnisch Liblicher way ceramically. On the market alloys on palladium basis, also such have themselves with high Silbergehalten, since years bew ihrt, it however from GrL nden the current market situation less and less appliziert. Also there were difficulties regarding the Vertr iglichkeit these well-known alloys on palladium basis, which zurOckzufiJhren on inadvertent, not specified copper impurities, which were present in such products in verh iltnism IL industrial union of high quantity, were. Task of the available invention was it to create a Dentallegierung on gold basis with high Silbergehalt and particularly low palladium content which is biocompatible and is suitable f0r lowmelting ceramic(s). These tasks become with the silver-rich, palladium-poor Dentallegierung on gold basis, marked into the Anspr0chen, gel6st. Due to the use prepare h of chstreiner metals as basic materials invention in accordance with - I EN alloys its difficulties regarding Vertr glichkeit. So far at the market erh iltliche sUberreiche alloys are not primer f {Jr lowmelting ceramic(s) suitably, contain gold (which corrosion-technically bew a ihrter and patient-friendly alloying constituent commodity), however however 40% palladium, whose Allergenit appears it not completely gekl irt, which is anyhow clearly reduced however - as invention in accordance with IL intended - by the simultaneous use of gold. Such alloys of the PMNF type are still invasiv common in use and cause no health problems. There were problems however in the past years with the Keramik0berz (Jgen. In order a permanent use in the mouth of the patient to erm6glichen, is to be demanded process-technically an appropriate care on the part of the dental technology, both regarding impurities and bez0glich of the adherence to the indicated Schmelzbereiches. Dar0ber outside are nowadays ceramic(s) masses verf0gbar, which become no longer darker due to the Silbergehaltes in the Dentallegierung, whereby also those are regarded to the state of the art before ten to twenty years of corresponding problems now as {3berwunden k6nnen. The fakultative employment of platinum in erfindungsgemti the EN Dentallegierungen erm (Sglicht apart from the ErhShung already addressed the fusing temperature, which for high-melting ceramic(s) masses is substantial, also a better Korrosionsbest indigkeit compared with frL heren silver basis alloys. A substantial advantage invention in accordance with i EN of the Dentallegierungen approximately {Jber the well-known not aufbrennPahigen silver alloys is in it, dal it aufbrennf is hig. The invention is iutert by the following examples more nether erl. Example 1: Aufbrennf ihi, qe Silberle.qierun.q alloy composition: Outer 24.5% Pd 20.0% Ru 0.5% AG 47.0% Zn 4.0% Sn 3.0% in 1,0% Vickersh rte HVs (after Gul) fusion interval of 200 965-1040°C 2 RKs 41 1 324 B WAK 20-600 i7,0 example 2: Aufbrennf ihi.qe S berle.qierun.q alloy composition: Outer 22.0% Pt 4, O% RST Pd 20.0% Ru 1.0% AG 47.0% Zn 4.0% Sn 1.0% in 1,0% Vickersh irte HVs (after Gul) 210 Sch melzintervall 1010-1110°C WAK 20-600 16.7 Verq calibration example: N cht aufbrennf ihi.qe Silberleqierun_q alloy composition outer one 20.0% Pd 20.0% AG 4O, O% Zn 2.0% HV5 150 fusion interval of 880-925°C L6slichkeit (pg/cmz x 7d), irte in 18,0% IR 0.1% Vickersh, < 100 I