Effect of Aluminum Phosphate Additions on the Crystallization and Bioactivity of Fluorrichterite Glass–Ceramics for Biomedical Applications |
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| Authors: | Julie A. Holloway Isabelle Denry |
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| Affiliation: | College of Dentistry, Section of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio 43218-2357 |
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| Abstract: | This study evaluated the effect of aluminum phosphate (AlPO4) additions on the crystallization behavior and bioactivity of potassium fluorrichterite glasses and glass–ceramics. Four glass compositions with increasing amounts of AlPO4 were melted. Mica and fluorrichterite were present in all glass–ceramics after crystallization. The microstructure consisted of platelet-shaped mica and prismatic fluorrichterite crystals. After incubation in simulated body fluid, a layer consisting of spherical-nanosized particles was present on the surface of the glasses. X-ray diffraction revealed the presence of hydroxyapatite after incubation of the glass and glass–ceramic powders. The addition of AlPO4 promoted mica nucleation and bioactivity in K-fluorrichterite glass–ceramics. |
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