High strength porcelain dental prosthetic device

Details High strength porcelain dental prosthetic device High strength porcelain dental prosthetic device

1984-11-26

1987-06-09

Wilson, John J.

Dentistry

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

Crown

4332221, 106 35, 264 19, A61C 510

Patent

active

046717706

ABSTRACT:
A high strength porcelain dental prosthetic device, such as an infrastructure, inlay or onlay is formed directly from a dental porcelain fired at elevated temperatures of about 1000.degree. F. and above, under a pressure of about 10 to 1000 microns of Hg. A special furnace is devised which will achieve this pressure range in a rapid efficient manner. The resultant porcelain dental infrastructure has a high density, and the strength approaching that found in commercial cast ceramic restorations.

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patent: 3541688 (1970-11-01), McLean et al.
patent: 3761728 (1973-09-01), Kochavi
patent: 3934348 (1976-01-01), Janjie
patent: 4104798 (1978-08-01), Takahashi et al.
patent: 4265669 (1981-05-01), Starling et al.
patent: 4386962 (1983-06-01), Walker
patent: 4431451 (1984-02-01), Mabie et al.

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