Effect of Mg2+ Doping on Formation of Apatite Layer by Bioactive Sol-Gel Glass-Ceramic | ||||
| Egyptian Journal of Biomedical Engineering and Biophysics | ||||
| Article 6, Volume 12, Issue 1, December 2011, Page 69-85 PDF (794.08 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejbbe.2011.1188 | ||||
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| Abstract | ||||
| BIOACTIVE glass–ceramics of mixed alkali and alkali earth were ……prepared by quick alkali mediated sol–gel method. The influence of varying MgO content substituted for SiO2 on the structure and thermal behavior of glass compositions in the SiO2–Na2O–CaO–P2O5–MgO system. This system was investigated by DSC, TGA, XRD and FTIR. In addition, to study in-vitro bioactivity of these glass-ceramics were characterized by analysis of apatite-formation layer in simulated body fluid (SBF). The obtained results revealed that at sintering temperature above 900oC, crystallization occurred and glass-ceramics which contain wollastonite, diopside and Calcium phosphate silicate. An increase in concentration of MgO at the expense of SiO2 led to the formation of diopside in the glass-ceramic. The present results of in vitro tests showed that tendency of apatite layer formation decreased with increasing quantity of diopside phase. | ||||
| Keywords | ||||
| sol-gel method; Bioactive glass-ceramic; Diopside; In-vitro test | ||||
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