Patent ID: 6362251
Filing Date: 2002-03-26
Classification: A61K

Abstract:
A dental composition comprising:a) a polymerizable compound selected from the group consisting of: ethylenically unsaturated monomers; epoxides; ormocers; liquid crystal monomers; oxetanes; spiro-orthoesters; and spiro-carbonates; b) a catalyst for cold, hot or photo-polymerization; and c) an inorganic filler in the form of a ceramic glass impregnated with said polymerizable compound wherein; i) said inorganic filler is present at a concentration of 20-70 wt. %; ii) in addition to said ceramic glass, said inorganic filler comprises a crystalline oxide at a concentration such that, upon polymerization of said dental composition, the refractive index of said filler matches the refractive index of the surrounding polymer; and iii) said inorganic filler has a pore volume of between 200 and 2,000 mm3/g.