22-08-2013 дата публикации
Номер: US20130216972A1
Принадлежит:
The subject of the invention is automation of process and apparatus for computer-controlled preparation of teeth, during said process preparing the tooth-stump(s) holding the prosthetic piece as pillar(s), takes place on basis of a digital plan of three dimensions, with a combined laser head of small size, matching the size of the oral cavity, moving along a trajectory fixed to a frame of face-bow controlled by a computer, preparing teeth-stump(s) before placing into the mouth the prosthetic piece produced by CAD/CAM technique. 1. Process for the automation of dental stump preparation , during which process the designing of the preparation of the dental stump(s) serving as pillar tooth/teeth for the fixing of the prothetic piece—bridge , crown , insert ,—to be placed into the oral cavity takes place by the dentist on basis of a three-dimensional X-ray recording , taken from the relative spot of the jaw , on computer with the help of a designing-program made for this purpose , then , on basis of the complete digital plan , producing the prosthesis takes place with CAD/CAM technology , then on basis of the same digital plan , preparation of the dental stump(s) serving as pillar tooth/teeth takes place also by the dentist with laser head dental milling device ,characterized by that,during the preparation of the dental stump(s){'b': '14', "as Step 1 the dentist, or a professionally qualified person persuades the patient's mandible into maximum opening position with the help of the telescopic frame of maxillo-mandibular fixing () and fixes it there,"}{'b': 26', '25, 'as Step 2 on basis of the complete digital plan the computer directs the combined laser head () in the car () to the pillar tooth to be prepared,'}{'b': 27', '26', '28, 'as Step 3 the laser miller () with mobility towards every direction of the space situated on the combined laser head () directed to the proper spot, carries out the preparation of the pillar tooth on basis of the complete digital plan, ...
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