Patent ID: 6916858

Claim:
A dental adhesive composition, which comprises a polymerizable composition comprising: (a) 1˜5% by weight of a polymerizable monomer containing a phosphoric acid group, (b) 10˜40% by weight of a polymenzable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, (c) 20˜40% by weight of a polymerizable monomer that is an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, having a solubility of water at 25° C. of 25% by weight or less, and (d) 15˜50% by weight of water, (e) 0.1˜5.0 parts by weight, based on 100 parts by weight of the polymerizable composition, of a photo-polymerization initiator and (f) a viscosity modifier having a mean particle size of 0.01˜0.05 μm further compounded therewith, the dental adhesive composition having a viscosity of 0.1-1 Pa·s at a temperature of 23° C.