Abstract
Since titanium shows high adhesive force to a high polymer by way of oxide film covering its surface, its usefulness to the resin veneered crown is expected. In the present study, emphasis was placed on “wettability, ” which is closely related to the adhesion between titanium and resin, and-with the aim of clarifying the causes of surface properties, which affect wettability of the titanium surface-the surface roughness of various treated surfaces, as well as contact angles of the primer and distilled water to such surfaces, were investigated. The results were as follows:
1. No change was observed between surface roughness after sandblasting for 15sec/cm2 (SB 15) and surface roughness obtained by extending the sandblasting time to SB 30, SB 45 and SB 60.
2. As a result of giving atmospherically-heated oxidation treatment of 600°C-60 min to titanium surfaces of SB 45 and SB 60, its surface roughness exhibited a greater increase than that of the non-heat-treated or “400°C-60 min”-treated titanium surface.
3. Contact angle of the primer to the titanium surface was 0°C in the cases of all titanium suface.
4. As a result of giving the atmospherically-heated oxidation treatments of 600°C-60 min to the titanium surfaces of SB 45 and SB 60, each contact angle of distilled water to these surfaces was 25°50′, which is the minimum value.
