Patent ID: 7700667

Claim:
A dental restorative composition comprising, based on total weight of the composition: about 1 to about 99 weight percent of a polymerizable (meth)acrylate of the structure: wherein A is an anhydride; a is 0 or 1; n is 0, 1, 2, or 3; R 1 , R 2 , R 3 , and R 4 are each independently hydrogen, hydroxy, C 1 -C 12 alkyl, C 1 -C 12 perhaloalkyl, C 1 -C 12 alkoxy, C 1 -C 12 perhaloalkoxy, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, (C 1 -C 6 alkyl)-O—(C 1 -C 6 alkylene), or hydroxy(C 1 -C 6 alkylene); x and y are each independently an integer of 1 to 10; z is an integer of 1 to 5; R 5 is hydrogen or methyl; wherein G and J are each independently O or NR 6 , wherein R 6 is hydrogen or C 1 -C 6 alkyl; m is 1, 2, 3, or 4; W is an organic group having the valency of z+1; and q is 0 or 1; wherein is different from and further wherein when a is 1, n+m+q is 1, 2, 3, or 4, and when a is 0, n+m+q is 1, 2, 3, 4, 5, or 6; about 1 to about 90 weight percent of a filler system; and a curing system; wherein the dental restorative composition does not require a separate dental bonding procedure and has a shear bonding strength to a dentin surface of at least 12.2 MPa after curing.