抄録
Surface modification methods of dental implant materials have been conducted to increase affinity between implant materials and surrounding tissues. Our previous experiment on surface treatments of titanium (Ti) showed that a blasted surface had better cell adhesion and proliferation than polished or machined surfaces. In this study, the cell adhesion and proliferation on the substrate were studied for the different roughness of blasted Ti surface. Different roughness and shape were prepared by changing the size and amount of blasting particles. Analysis of the surface by a roughness tester and a scanning electron microscope showed that the surface roughness depended on the size of blasting particles, but not on the amount of particles. An increase in number of cultured cells was observed on the Ti surface with the smaller roughness. Besides, it was found that the number of cultured cells reduced with increasing the amount of blasting particles, because residual steel particles arising from blasting deteriorated the cell adhesion ability of Ti surface.
