Patent ID: 8426488

Claim:
A dental curable composition which comprises (A) a polymerizable monomer mixture comprising a polymerizable monomer having acid group(s) in the molecule and (B) a polymerization initiator, wherein the composition comprises component (D1) and wherein component (A) optionally comprises component (A′); wherein the component (A′) is a long-chain polymerizable monomer having a structure with is length of 17 or more atoms and the component (D1) is a soft resin powder material which is not substantially dissolved and swollen by the above component (A) or (A′); wherein the soft resin powder material (D1) is at least one selected from the group consisting of polyethylene, polypropylene, ethylene propylene copolymer, ethylene propylene terpolymer, ethylene vinyl acetate copolymer, silicone polymer and ethylene-(meth)acrylate copolymer; and when the amount of the component (A′) based on 100 parts by weight of the component (A) is represented by [a′] and the amounts of the components (A), (B) and (D1) based on 100 parts by weight of the total of the components (A) and (B) are represented by (a), (b) and (d 1 ), respectively, the following expressions (1) to (5) are satisfied; 70≦( a )≦99.99 (1) 0.01≦( b )≦30 (2) 1 ≦[a′ ]/5+( d 1 ) (3) [ a′]≦ 95 (4) ( d 1)≦250 (5).