Method of manufacturing ceramic artifical tooth restorations

Details Method of manufacturing ceramic artifical tooth restorations Method of manufacturing ceramic artifical tooth restorations

1993-06-22

1994-08-30

Hirsch, Paul J.

Dentistry

Method or material for testing, treating, restoring, or...

Crown

433218, A61C 510, A61C 508

Patent

active

053422015

ABSTRACT:
There is disclosed a method of manufacturing artificial tooth restorations for natural teeth or implants comprising a ceramic densely sintered, high-strength individual core B with dental porcelain A by powder metallurgical manufacturing methods. The inner surface I of the core B, which will fit against one or more prepared tooth surfaces P or artificial abutments, is manufactured by forming a ceramic powder mixture against a surface of a body at which this mentioned surface is manufactured by registering the surfaces of the prepared teeth or artificial abutments and their mutual relationship with a three-dimensional optical or mechanical reading method directly in the mouth or on a model of, e.g., plaster, after which the registered surfaces are reproduced in an enlarged size, e.g., with a computer-controlled milling machine. The amount of enlargement is calculated from the shrinkage of the ceramic material during sintering to full density and considering the gap for cement.

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patent: 5106303 (1992-04-01), Oden et al.
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