純チタンによるノンリテンション法硬質レジン前装冠の臨床応用に関する基礎的研究 処理条件の違いによるチタン表面の濡れ性について

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.