Method of manufacture of dental porcelain having small leucite crystallites

摘要

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° to about 1050° C. and a coefficient of thermal expansion from about 12x10<-6>/° C. to about 17.5x10<-6>/° C., and comprises: