High strength porcelain dental prosthetic device
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United States of America Patent
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-
Jun 9, 1987
Issued Date -
N/A
app pub date -
Nov 26, 1984
filing date -
Apr 3, 1984
priority date (Note) -
Expired
status (Latency Note)
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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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