Patent ID: 8297975

Claim:
A method of using a reaction-curable adhesive composition exhibiting acidity, comprising a step of applying said reaction curable adhesive composition to a tooth surface that has been previously treated with a self-etching primer composition (V) which contains (A) a polymerizable monomer, (B) a reducing inorganic compound containing sulfur, (C) a ketone solvent and (D) water, and which does not substantially contain an alcohol solvent and has storage stability of not shorter than 2 hours at 65° C., wherein said reaction curable adhesive composition comprises: a weakly acidic to alkaline composition (I), wherein the pH value of said weakly acidic to alkaline composition (I) at 23° C. is in the range of 4.5 to 9, comprising: (a) a polymerizable monomer and (b) a compound represented by the following formula (1): R 1 —C 6 H 4 —NR 2 CH 2 COOR 3 (1) wherein R 1 and R 2 are each independently a hydrogen atom or an alkyl group which may have a functional group, and R 3 is a hydrogen atom or a metal atom, and a strongly acidic composition (II), wherein the pH value of the strongly acidic composition (II) at 23° C. is not less than 0.1 but less than 4.5, comprising: (a1) a polymerizable monomer having at least one acidic group in a molecule selected from the group consisting of a carboxylic acid group, a phosphoric acid group, a thiophosphoric acid group, a sulfonic acid group, and a sulfinic acid group.