PROBLEM TO BE SOLVED: To provide a dental curable composition that has excellent polishing luster and lubrication durability excellent transparency, curing depth and light diffusibility and excellent mechanical strength of a cured product (restoration material).SOLUTION: A dental curable composition comprises a polymerizable monomer (A), an inorganic filler (B), a polyorganosilsesquioxane particle (C) with an average particle diameter of 0.5-30 μm and a polymerization initiator (D).SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】研磨滑沢性及び滑沢耐久性に優れ、良好な透明性、硬化深度及び光拡散性を有し、硬化物(修復材料)の機械的強度にも優れる歯科用硬化性組成物を提供する。【解決手段】重合性単量体(A)、無機充填材(B)、平均粒子径が0.5~30μmのポリオルガノシルセスキオキサン粒子(C)及び重合開始剤(D)を含む歯科用硬化性組成物。【選択図】なし