Patent ID: 6300389
Filing Date: 2001-10-09
Classification: A61K,Y10S

Abstract:
A dental restorative material consisting of:an amorphous inorganic material having a refractive index in a D-line of sodium in the range of 1.470.about.1.520 and having an X-ray opacity;at least one (meth)acrylic ester monomer not having a benzene ring in a molecule thereof; andat least one polymerization initiator,wherein said amorphous inorganic material contains Si, Al, P, Sr, F, and O in conversion amounts from 20 to 50% by weight for SiO.sub.2, from 20 to 40% by weight for Al.sub.2 O.sub.3, from 0 to 15% by weight for P.sub.2 O.sub.5, from 15 to 40% by weight for SrO, and from 3 to 20% by weight for F.sub.2, respectively, and is substantially free from alkali metal elements and from Be, Mg and Ba; andwherein a polymer of said (meth) acrylic ester monomer not having a benzene ring in a molecule thereof has a refractive index in a D-line of sodium equal to or less than a refractive index in a D-line of sodium of said amorphous inorganic material.