Method of manufacture of dental porcelain having small leucite crystallites
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United States of America Patent
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Dec 9, 2003
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N/A
app pub date -
Aug 8, 2000
filing date -
Mar 12, 1996
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Abstract
A porcelain composition for dental restorations comprising a leucite crystallite phase and a glass matrix phase, wherein the leucite crystallites possess diameters not exceeding about 10 micron. Preferably, the porcelain composition has a maturing temperature from about 750.degree. to about 1050.degree. C. and a coefficient of thermal expansion from about 12.times.10.sup.-6 /.degree. C. to about 17.5.times.10.sup.-6 /.degree. C., and comprises:
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