Patent ID: 8084515

Claim:
A dental composition comprising: a carbosilane-containing polymer comprising: greater than one repeat unit, at least four Si-arylene bonds, at least one (meth)acrylate moiety, Si—H moiety, or both, no Si—O bonds, and two silicon atoms separated by one arylene group in each repeat unit; wherein the carbosilane-containing polymer has the following Formula (I): wherein: each Ar is independently an arylene group; each R is independently an aliphatic group, cycloaliphatic group, or combinations thereof, optionally including one or more O, Br, Cl, or Si atoms, or combinations thereof, which can include a bicyclic group; each Q is independently a bond, or an aliphatic group, cycloaliphatic group, aromatic group, or combinations thereof, optionally including one or more O, Br, Cl, or Si atoms, or combinations thereof, which can include a bicyclic group, wherein Q optionally includes one or more (meth)acrylate groups; each R 1 -R 4 group is independently an aliphatic group, cycloaliphatic group, aromatic group, or combinations thereof, optionally substituted by one or more (meth)acrylate groups; each R 5 -R 6 group is independently hydrogen, an aliphatic group, cycloaliphatic group, aromatic group, or combinations thereof, optionally substituted by one or more (meth)acrylate groups; and n is greater than one; a polymerizable component different from the carbosilane-containing polymer; and an initiator system; wherein the carbosilane-containing polymer is polymerizable; and wherein the dental composition is hardenable.