PREPARATION AND APATITE-FORMING ABILITY OF CaSO₄-PHOSPHATE GLASS COMPOSITES

抄録

II-CaSO₄-80SiO₂-20P₂O₅ glass composites were successfully prepared as bulk or film by sol-gel method, and characterized by XRD, FT-IR, SEM, and EDX. In this composite system, SEM and EDX analyses suggested that CaSO₄ was not dissolved into glass or decomposed during the preparation process. Apatite-forming ability of the prepared film was evaluated by SBF immersion experiment and apatite-formation by alternate soaking process. This composite was partially dissolved in SBF, that is, partial bioresorbability was exhibited. By ASP, Ca-deficient hydroxyapatite was found to be formed onto the composite film surface, easier than glass without II-CaSO₄ surface.