Dental adhesive composition

A method of producing a dental adhesive composition which contains an acidic group-containing polymerizable monomer (A), polyvalent metal ions (B), water (C), a water-soluble organic solvent (D) and fluoride ions (E), comprising:

• using a phosphoric acid-type compound having a hydrogenphosphoric diester group as at least 35% by mole of said acidic group-containing polymerizable monomer (A);
• using a polyvalent metal ion-releasing component (B′) as a source of said polyvalent metal ions (B);
• using a fluoride ion-releasing component (E′) as a source of said fluoride ions (E);
• mixing the acidic group-containing polymerizable monomer (A), polyvalent metal ion-releasing component (B′), water (C), water-soluble organic solvent (D) and fluoride ion-releasing component (E′) together, and ripening the mixture so that the polyvalent metal ions and the fluoride ions released from said polyvalent metal ion-releasing component (B′) and said fluoride ion-releasing component (E′) maintain a valence number ratio (RF) represented by the following formula (1),
• RF=VF/TVP (1)
• wherein,
• VF is a valence number of the fluoride ions (E) contained in the composition, and
• TVP is a total valence number of the polyvalent metal ions (B) contained in the composition,
• that lies a range of 0.2 to 2.0.