Patent ID: 6709271
Filing Date: 2004-03-23
Classification: A61K

Abstract:
A dental composite composition comprising:(a) from about 1 to about 35 weight percent of a monomer portion comprising at least one monomer having a functional group capable of undergoing polymerization; (b) from about 75 to about 95 weight percent of a filler portion, said filler portion comprising a spherical filler portion at a concentration of about 5 weight percent to about 75 weight percent of the composition, having an average size of about 0.2 microns to about 1.5 microns; a submicron filler portion at a concentration of about 5 weight percent to about 50 weight percent of the composition, having an average size of about 0.020 microns to about 0.080 microns; and a conventional filler portion at a concentration of about 5 weight percent to about 75 weight percent of the composition; and (c) from about 0.01 to about 10 weight percent of a polymerization catalyst portion comprising at least one catalyst capable of assisting in the polymerization of said functional group of said monomer portion and hardening of the composition after application of the composition to a tooth surface or other dental surface; wherein said spherical filler portion is present in an amount sufficient to reduce shrinkage of the composition after polymerization to about 1.8 percent or less.