PROBLEM TO BE SOLVED: To provide a curable composition for medical/dental use which can express adhesiveness of firmly adhering biological hard tissue and adhesion durability capable of enduring even under a severe environment inside an oral cavity, and additionally, is difficult to suffer degradation or deterioration caused by hydrolysis due to environmental temperature, acidity of solution or the like, and enables a packaging form of one-component type having excellent storage stability.SOLUTION: A curable composition for medical/dental use uses a silane coupling agent which has at least one or more kinds of radically polymerizable group, and in which at least one or more of positions of alkoxide that bonds a silicon atom is an alkyl group of Cto Cstraight chain or branched chain including unsaturated bond.SELECTED DRAWING: None【課題】生体硬組織に強固に接着する接着性と、過酷な口腔内環境下においても耐えうる接着耐久性を発現させることができ、加えて、環境温度や溶液の酸性度等により加水分解による劣化や変質を受けにくい、貯蔵安定性に優れた１液型の包装形態を可能とする医科歯科用硬化性組成物の提供。【解決手段】少なくとも一種類以上のラジカル重合性基を有し、かつ、ケイ素原子に結合するアルコキシドの部位の少なくとも一つ以上が不飽和結合を含むC6～C40の直鎖又は分岐鎖のアルキル基であるシランカップリング剤を用いた医科歯科用硬化性組成物。【選択図】なし
