PROBLEM TO BE SOLVED: To provide a dental curable composition excellent in removability when an excess paste protruding from a margin part in adhering dentine to restoration substance for a tooth crown is removed in a semi-cured state by provisional irradiation with a light irradiator for a short time of 1 to 2 seconds, and excellent in mechanical characteristics just after the irradiation and 1 day thereafter.SOLUTION: A dental curable composition comprises a polymerizable monomer (a) having no acidic group, a photoinitiator (b), a polymerization promoter (c) and a filler (d), where the photoinitiator (b) comprises a triazine-based compound (b-1) substituted by 0.005 to 0.3 pt.wt. of a trihalomethyl group relative to the total amount 100 pts.wt. of the polymerizable monomer component, 0.001 to 0.3 pt.wt. of a α-diketone compound (b-2) and 0.001 to 3 pts.wt. of an aromatic amine compound (b-3) and where the polymerization promoter (c) comprises an aromatic sulfinic acid salt (c-1), a copper compound (c-2) and a benzotriazole compound and/or benzimidazole compound (c-3).COPYRIGHT: (C)2014,JPO&INPIT【課題】歯質と歯冠用修復物を接着する際にマージン部からはみ出す余剰ペーストを、光照射器で1~2秒の短時間で仮照射して半硬化状態で除去する際の除去性に優れ、かつ本照射直後の機械的特性と1日後の機械的特性に優れた歯科用硬化性組成物を提供する。【解決手段】酸性基を有しない重合性単量体(a)、光重合開始剤(b)、重合促進剤(c)、およびフィラー(d)を含み、光重合開始剤(b)が、重合性単量体成分の総量100重量部に対して、0.005~0.3重量部のトリハロメチル基により置換されたトリアジン系化合物(b-1)、0.001~0.3重量部のα-ジケトン化合物(b-2)、及び0.001~3重量部の芳香族アミン化合物(b-3)を含み、重合促進剤(c)が、芳香族スルフィン酸塩(c-1)、銅化合物(c-2)、ならびにベンゾトリアゾール化合物及び/又はベンゾイミダゾール化合物(c-3)を含む歯科用硬化性組成物。【選択図】なし
