Dentistry – Method or material for testing – treating – restoring – or...
Patent
1983-04-26
1986-12-30
Peshock, Robert
Dentistry
Method or material for testing, treating, restoring, or...
433204, A61C 500
Patent
active
046326600
ABSTRACT:
Am inprovment in prosthetic dentistry which allows a porcelain veneer facing to be permanently affixed directly to a natural or virgin tooth without significant grinding or reduction of the tooth surface. The improvement consists in a method, and the product produced thereby, of chemically etching a selected portion of a porcelain veneer facing, which is thereafter directly affixed to an acid-etched natural or virgin tooth surface by a suitable bonding composition. A selected portion of the porcelain veneer is covered by a layer of a waxy protective material and the facing is thereafter contacted with a hydrofluoric acid solution of controlled concentration under controlled time and temperature conditions so as to partially dissolve or etch the unprotected portion of the facing. The porcelain veneer facing is thereafter capable of being bonded directly to an acid-etched natural or virgin tooth with great strength and durability.
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