Abstract
In this study, the influence of the heat-treatment of the bovine dentin, on the adhesion ofthe dentin to adhesive resin cement was evaluated using frozen storage bovine teeth. Afterperforming thermal cycling 10, 000 times between 4 and 60°C, or thermal treatment for 10hours at 100°C, shear bond strength of the specimens adhered to Super bond was measured.Furthermore, scanning electron microscopic observation of the polished surface of thethermal treated dentin, the dentin surface pre-treated by 10-3 solution, and resin tags of the Super bond was performed, and Knoop hardness of the dentin was measured. Shear bondstrength of the dentin to adhesive resin cement decreased after thermal treatment. Further-more, the effects of pre-treatment agents on the removal of the smeared layer decreased, and decreases in Knoop hardness were noted, suggesting the influence of thermal treatmenton the changes in dentin collagen.
