PROBLEM TO BE SOLVED: To provide a nonsolvent dental adhesive composition that has stable properties, offers a good balance between photocurability by LED light irradiation and stability to environmental light, and shows high adhesion strength to dentin.SOLUTION: A one-agent type nonsolvent dental adhesive composition contains an acidic group-containing polymerizable monomer (A), a polymerizable monomer containing no acidic group (B), a photopolymerization initiator (C), and a polymerizable group-containing benzotriazole compound (D).SELECTED DRAWING: None【課題】性状安定性が良好であり、ＬＥＤ光照射による光硬化性と環境光安定性にバランスよく優れ、かつ歯質に対して高い接着強さを示す非溶媒系歯科用接着性組成物を提供すること。【解決手段】酸性基含有重合性単量体（Ａ）、酸性基を有しない重合性単量体（Ｂ）、光重合開始剤（Ｃ）、及び重合性基含有ベンゾトリアゾール系化合物（Ｄ）を含有する１剤型の非溶媒系歯科用接着性組成物。【選択図】なし
