| 摘要 |
A photopolymerizable dental composition, which comprises: (A) an organic composite filler obtained by polymerizing a sulfonic acid or sulfonate monomer of the fomula: <CHEM> wherein R1 is a hydrogen atom, a C1-C20 alkyl group, a phenyl group or a derivative thereof, or a halogen atom; X is -CONH-, <CHEM> -COO(CH @@@ or @ @@CH@@@ wherein each of R2 and R3 is a hydrogen atom or a C1-C15 alkyl group, R4 is a C1-C15 alkylene group, m is an integer of from 1 to 20 and n is an integer of from 0 to 20; and Y is a hydrogen atom, NH4 or an alkali metal atom, and at least one radical polymerizable vinyl monomer in a polymerization system in which an inorganic compound is dispersed; (B) a monomer mixture comprising 2,2-bis[4-(methacryloxyethoxy)phenyl]propane, at least one hexa-functional urethane (meth)acrylate of the formula: <CHEM> wherein n is an integer of from 1 to 10, and each of R1 and R2 which may be the same or different is a hydrogen atom or a methyl group, and a diluting ethylenic vinyl monomer; and (C) a photopolymerization initiator comprising an alpha -diketone compound and a reducing agent, wherein the reducing agent is at least one member selected from the group cosisting of diaminobenzophenone compounds of the formula: <CHEM> wherein each of R1 to R4 which may be the same or different is a hydrogen atom or a C1-C5 alkyl group, provided that at least one of them is the alkyl group, and C5-C10 alkyl esters of 4-(N,N-dimethylamino)benzoic acid. t |
