Ambient light stability is high and represents the adhesion durability and adhesion was superior to (dentin in particular) tooth, the present invention, the dental adhesive composition of one-part, which are uniformly mixed components I provide things. And the polymerization initiator present invention, the polymerizable monomer having a fluorocarbon group represented by the polymerizable monomer having an acidic group (A), by the formula (1) (B), water (C), (D) Of 100 parts by weight of the total amount of the polymerizable monomer, the content of the polymerizable monomer (A) which contains, and having the acidic group, one-part dental adhesive is 5.5 to 35 parts by weight is a wood composition. (In the formula, a methyl group R 1 is a hydrogen atom or,, Rf is. Showing a fluoroalkyl group having 1 to 20 carbon atoms)本発明は、歯質(特に象牙質)に対して優れた接着性及び接着耐久性を示し、かつ環境光安定性が高く、各成分が均一に混合された1液型の歯科用接着材組成物を提供する。本発明は、酸性基を有する重合性単量体(A)、式(1)で表されるフルオロカーボン基を有する重合性単量体(B)、水(C)、及び重合開始剤(D)を含有し、前記酸性基を有する重合性単量体(A)の含有量が、重合性単量体の全量100重量部の内、5.5~35重量部である1液型歯科用接着材組成物である。(式中、R1は水素原子、又はメチル基を示し、Rfは炭素数1~20のフルオロアルキル基を示す。)
