The polymerization characteristic monomer where it possesses aromatic ring, the polymerization characteristic monomer which at the same time possesses hydroxyl group (a), possesses aromatic ring, at the same time does not possess hydroxyl group (b), (a) and (b) the polymerization characteristic monomer other than (c) being the composition for dentistry which is contained, in all the polymerization characteristic monomers, the polymerization characteristic monomer (a), (b) and (c) content, respectively 10 - 30 weight %, 50 - 70 weight %, and 10 - 30 weight % the composition for dentistry which is. As for the composition for dentistry of this invention, it is something which is used for ideal as can substitute the one part or the whole of the natural tooth in the field of dentistry medical care.芳香環を有し、かつ水酸基を有する重合性単量体(a)、芳香環を有し、かつ水酸基を有さない重合性単量体(b)、(a)及び(b)以外の重合性単量体(c)を含有する歯科用組成物であって、全重合性単量体中、重合性単量体(a)、(b)及び(c)の含有量が、それぞれ10~30重量%、50~70重量%、及び10~30重量%である歯科用組成物。本発明の歯科用組成物は、歯科医療の分野において、天然歯の一部分又は全体を代替し得るものとして好適に用いられるものである。
