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PORCELAIN COATING COMPOSITIONS FOR LOW EXPANSION PORCELAIN CORES AND THE RESULTING ALL-CERAMIC DENTAL RESTORATIONS
PORCELAIN COATING COMPOSITIONS FOR LOW EXPANSION PORCELAIN CORES AND THE RESULTING ALL-CERAMIC DENTAL RESTORATIONS
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机译:低膨胀瓷粉的瓷涂层组成及全瓷牙修复
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摘要
An all-ceramic dental restoration comprising a ceramic core over and atleast one coating thereon of a porcelain composition having a maturing temperature offrom about 850° to about 1050°C. and a coefficient of thermal expansion of from about4.0 to about 13 (room temperature to 500° C.) parts per million per ° C. comprising:Component Amount (Wt. %)SiO2 69 - 75Al2O3 4.0 - 9.5Na2O 5 - 10K2O 0 - 4CaO 0 - 1.5MgO 0 - 6B2O3 6 - 15F 0-3
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