The acidic basis and/or the radical polymerization characteristic monomer which possesses the hydrophilic radical (a) the oxidizer (b) melting at least in the 1st radical polymerization characteristic monomer which is contained, the 1st medicine and the acidic basis and the hydrophilic radical which become the radical polymerization characteristic monomer which the possession it does not do (c) aromatic sulfinic acid (d) making the 2nd radical polymerization characteristic monomer disperse which it contains at least, the redox hardening type composition of the amount package type which consists of with the 2nd medicine which becomes is offered. With this invention, it is possible to guarantee the time when it is necessary for gluing operation furthermore outside damp body such as tooth and bone, vis-a-vis crown restoration material such as metal and pottery material, gluing first stage the redox hardening type composition which reveals the adhesiveness which is superior from the first after that over long term is offered.酸性基及び/又は親水性基を有するラジカル重合性単量体(a)を含有する第1のラジカル重合性単量体に少なくとも酸化剤(b)を溶かしてなる第1剤と、酸性基も親水性基も有しないラジカル重合性単量体(c)を含有する第2のラジカル重合性単量体に少なくとも芳香族スルフィン酸塩(d)を分散させてなる第2剤とからなる分包型のレドックス硬化型組成物が提供される。本発明により、接着操作に必要な時間を確保することができ、しかも歯牙、骨等の湿潤体の外、金属、陶材等の歯冠修復材料に対しても、接着初期はもとよりその後長期にわたって優れた接着強さを発現するレドックス硬化型組成物が提供される。
