PROBLEM TO BE SOLVED: To provide a dental adhesive composition having excellent water resistance of a cured body, capable of showing continuously adhesion strength even when being preserved for a long period in a single liquid state, and maintaining the adhesion strength highly even after being used for adhesion.SOLUTION: The single liquid type adhesive composition for dentin contains: (A) an acid group-containing polymerizable monomer containing &ge95 mass% of a phosphonic acid group-containing polymerizable monomer, or a phosphinic acid group-containing polymerizable monomer (B) polyvalent metal ion, preferably titanium ion (C) water and further preferably (E) a photopolymerization initiator.COPYRIGHT: (C)2012,JPO&INPIT【課題】 一液状態で長期保存されても接着強度が持続して発揮され、且つ、硬化体の耐水性も良好で、上記接着強度が接着に使用後も高度に維持可能な歯科用接着性組成物を開発すること。【解決手段】 (A)ホスホン酸基含有重合性単量体、又はホスフィン酸基含有重合性単量体を95質量%以上含んでなる酸性基含有重合性単量体(B)多価金属イオン、好適にはチタンイオン(C)水さらに、好適には(E)光重合開始剤を含有することを特徴とする一液型歯質用接着性組成物。【選択図】 なし
