Patent ID: 7906564

Claim:
A self-etching and bonding dental resin cement composition, comprising: a two-paste system that is combined prior to use, wherein a first paste comprises about 40 to about 80 weight percent of a first polymerizable (meth)acrylate carboxylic acid/anhydride based on the total weight of the first paste polymerizable material, wherein the first polymerizable (meth)acrylate carboxylic acid/anhydride is 4-(meth)acryloyloxymethyltrimellitic acid; 4-(meth)acryloyloxymethyltrimellitic anhydride; 4-(meth)acryloyloxyethyltrimellitic acid; 4-(meth)acryloyloxyethyltrimellitic anhydride; 4-(meth)acryloyloxypropylltrimellitic acid; 4-(meth)acryloyloxypropyltrimellitic anhydride; or a combination thereof; about 0.1 to about 30 weight percent of a first copolymerizable multi-functional (meth)acrylate, based on the total weight of the first paste polymerizable material; a first diluent; a first filler; and benzoyl peroxide free radical polymerization initiator; wherein a second paste comprises about 50 to about 95 weight percent of a second copolymerizable multi-functional (meth)acrylate, based on the total weight of the second paste polymerizable material; a second diluent; a second filler; and a plurality of free radical polymerization accelerators including at least two aromatic tertiary amines and at least one aromatic sulfinic acid salt, and wherein the self-etching and bonding dental resin cement composition is substantially free of added water.