PROBLEM TO BE SOLVED: To provide a dental curable composition that has moderate low viscosity, and gives a cured body, which resists deterioration of strength even when immersed underwater for a long time.SOLUTION: A dental curable composition contains a polymerizable monomer represented by formula (1).SELECTED DRAWING: None【課題】適度な低粘度性を有し、硬化体を長期間水中浸漬しても強度低下が少ない歯科用硬化性組成物の提供。【解決手段】式(1)で示される重合性単量体を含む歯科用硬化性組成物。【選択図】なし