PROBLEM TO BE SOLVED: To provide a dental polymerizable composition having excellent flexibility after curing which has moderate curing time and excellent curability and storage stability.SOLUTION: There is provided a dental polymerizable composition which comprises a (meth)acrylic polymerizable monomer (a), a hydroperoxide compound (b), a thiourea derivative (c), a transition metal compound (d), a softening agent (e) and a silica powder (f).SELECTED DRAWING: None【課題】適度な硬化時間と、優れた硬化性及び保存安定性とを有し、硬化後の柔軟性に優れる歯科用重合性組成物を提供する。【解決手段】（メタ）アクリル系重合性単量体（ａ）、ハイドロパーオキサイド化合物（ｂ）、チオ尿素誘導体（ｃ）、遷移金属化合物（ｄ）、軟化剤（ｅ）及びシリカ粉末（ｆ）を含有してなる歯科用重合性組成物。【選択図】なし
