PROBLEM TO BE SOLVED: To provide a dental curable composition that comprises a polymerizable monomer, a cured product of which has excellent mechanical strength, and which has low viscosity and excellent handleability even in room temperature environment, and further has excellent operability.SOLUTION: A dental curable composition comprises (A) polymerizable monomer represented by formula (1), (B) polymerization initiator, and (C) organic-inorganic composite filler, where X is a divalent group； Arand Areach are an aromatic； Land Leach are a hydrocarbon with the main chain consisting of 2-60 atoms； Rand Rindependently represent H or methyl； m1, m2, n1 and n2 independently an integer of 1-3].SELECTED DRAWING: None【課題】硬化物の機械的強度に優れると共に、室温環境下においても低粘度で取扱い性に優れる重合性単量体を用い、更に操作性に優れる歯科用硬化性組成物の提供。【解決手段】式（１）で示される（Ａ）重合性単量体と、（Ｂ）重合開始剤と、（Ｃ）有機無機複合フィラーと、を含有する歯科用硬化性組成物。〔Ｘは２価の基；Ａｒ１及びＡｒ２は芳香族；Ｌ１及びＬ２は主鎖が２～６０の炭化水素；Ｒ１及びＲ２は各々独立にＨ又はメチル；ｍ１、ｍ２、ｎ１及びｎ２は各々独立に；１～３の整数〕【選択図】なし
