A photocurable composition used in preparation of a dental prosthesis or the like by stereolithography, comprising a (meth)acrylic monomer component and a photopolymerization initiator, wherein the (meth)acrylic monomer component comprises: an acrylic monomer (X) having a weight-average molecular weight of from 400 to 580 and including two aromatic rings and two acryloyloxy groups in one molecule thereof； and at least one of a (meth)acrylic monomer (A) having a weight-average molecular weight of from 200 to 400 and including one or more ether bond and two (meth)acryloyloxy groups in one molecule thereof, a (meth)acrylic monomer (B) having a weight-average molecular weight of from 130 to 240 and including a ring structure other than an aromatic ring and one (meth)acryloyloxy group in one molecule thereof, or a (meth)acrylic monomer (C) having a weight-average molecular weight of from 190 to 280 and including a hydrocarbon skeleton and two (meth)acryloyloxy groups in one molecule thereof.一種光硬化性組成物，係用於利用光造形所為之牙科補綴物等之製作，其含有(甲基)丙烯酸單體成分及光聚合起始劑； 該(甲基)丙烯酸單體成分包含：1分子中具有2個芳香環與2個丙烯醯氧基的Mw400~580之丙烯酸單體(X)，與 1分子中具有1個以上之醚鍵與2個(甲基)丙烯醯氧基的Mw200~400之(甲基)丙烯酸單體(A)、1分子中具有芳香環以外之環結構與1個(甲基)丙烯醯氧基的Mw130~240之(甲基)丙烯酸單體(B)、及1分子中具有烴骨架與2個(甲基)丙烯醯氧基的Mw190~280之(甲基)丙烯酸單體(C)中之至少1種。
