采用磷酸四钙和磷酸氢钙为羟基磷灰石水泥(HAC)粉末,5wt%硅酸钠水溶液为固化液,制备了硅羟基磷灰石水泥(s-HAC).结果显示:s-HAC的凝结时间和抗压强度性能明显优于以水为固化液的HAC.XRD和IR结果分析表明:s-HAC的最终水化产物为硅羟基磷灰石.s-HAC在Tris-HCl缓冲溶液中不仅能够释放出Ca、P离子,而且还能释放出Si离子,s-HAC的体外降解性优于HAC.细胞培养实验显示:MG63细胞不仅能够在s-HAC和HAC表面粘附并保持正常的细胞形态;而且MG63细胞在s-HAC上的光密度(OD)值和碱性磷酸酶(ALP)活性明显高于HAC,这说明s-HAC能促进成骨细胞增殖和分化.
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