抄録
The self-etching primer adhesives examined in the present study were aqueous mixtures of 5wt% MDP, 35wt% HEMA, 3wt% 2-hydroxyl-3-(3, 4-dimethyl-9-oxo-9H-thioxanthen-2-yloxy)-N, N, N-trimethyl-1-propanaminium chloride (QTX), 0.5wt% ethyl-p-(N, N-dimethylamino) benzoate (EDM), and 30wt% water-soluble dimethacrylate (i. e., 2, 2-bis (4-methacryloxy polyethoxypheny) propane (BPE), Glycerol dimethacrylate (GMR), or Glycerol methacrylate acrylate (GAM)). Self-etching primer adhesive was directly applied to polished bovine teeth. Tensile bond strength of composite resin to bovine teeth was measured after one-day immersion in water at 37°C. Differences in water-soluble dimethacrylate monomer did not produce any significant differences in tensile bond strength to dentin or enamel. The use of N-phenyliminodiacetic acid (PIDAA) instead of EDM showed significantly higher bond strength to dentin and enamel. In conclusion, GMR and GAM were useful as water-soluble dimethacrylates while the combination of PIDAA and QTX was effective in improving the bond strength of composite resin to teeth in an all-in-one bonding system.
