The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
Jun. 22, 1993
Agneta Oden, Stocksund, SE;
Sandvik AB, Sandviken, SE;
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.