Patent ID: 8084514

Claim:
An uncured dental composite material comprising a. a composition comprising at least one compound of the formula: E 1 -R 1 n —O—R 2 -Q-R 3 —O—R 4 m -E 2 wherein: Q is selected from the group consisting of: (i) a carbocyclic ring containing 5 or 6 carbon atoms with up to 3 C 1-3 alkyl substituents on the ring; (ii) S—R 5 -T wherein S and T are each independently carbocyclic rings containing 5 or 6 carbon atoms with up to 3 C 1-3 alkyl substituents on the ring, and R 5 is a covalent bond or an alkylene group containing 1, 2, 3 or 4 carbon atoms; and (iii) a carbocyclic fused ring system containing two fused rings containing a total of 8 to 10 carbon atoms with up to 4 C 1-3 alkyl substituents on the fused ring system; R 2 and R 3 are each independently selected from the group consisting of a covalent bond and an alkylene group containing 1 to 4 carbon atoms; R 1 is a repeat unit of the formula R 4 is a repeat unit of the formula E 1 and E 2 are each independently wherein R 6 is H (acryloyl) or CH 3 (methacryloyl); n and m are each independently an integer greater than 0; a is independently an integer from 3 to 6; a′ is independently an integer from 3 to 6; provided that neither R 2 nor R 3 is a covalent bond bonded directly to an aromatic ring; and provided that the degree of polymerization of the at least one compound is between 2 and 30; b. optionally, at least one other polymerizable (meth)acrylic ester component; c. at least one polymerization initiator compound; and d. at least one filler selected from the group consisting of barium aluminum silicate, barium aluminum borosilicate, ytterbium trifluoride, glass beads, silica, quartz, borosilicates, alumina, alumina silicates, and mixtures thereof, wherein the total amount of the at least one filler is from about 40 weight percent to about 90 weight percent, based on the total weight of the uncured dental composite material.