To provide a polymerizable composition having high storage stability and color tone stability.SOLUTION: There is provided a two-paste type polymerizable composition for dentistry which comprises: (A) one or more polymerizable monomers, (B) an organic peroxide as a chemical polymerization initiator, (C) a basic filler in a first paste; and (A) one or more polymerizable monomers, (C) a basic filler and (D) an aromatic amine compound as a chemical polymerization accelerator in a second paste, in which the content of the basic filler (C) in the second paste is 30 to 80 pts.wt. based on the total 100 pts.wt. of the compositions of the second paste.SELECTED DRAWING: None【課題】貯蔵安定性並びに色調安定性が高い重合性組成物の提供。【解決手段】第一のペーストに(A)1種以上の重合性単量体、(B)化学重合開始材としての有機過酸化物、(C)塩基性充填材を含み、第二のペーストに(A)1種以上の重合性単量体、(C)塩基性充填材、(D)化学重合促進材としての芳香族アミン化合物を含み、第二のペースト中の(C)塩基性充填材が第二のペーストの組成の総量100重量部に対して30-80重量部である歯科用2ペースト型重合性組成物。【選択図】なし