β-磷酸三钙对玻璃基骨水泥显微结构的影响

Influence of Addition of β-Tricalcium Phosphate on the Microstructure of Glass-Based Bioactive Bone Cement

以CaHPO4.2H2O和CaCO3为原料,采用固相反应法制备β-磷酸三钙(TCP),并将其掺加到玻璃基生物骨水泥中制成复合骨水泥,浸泡在人体模拟体液(SBF)中,研究其显微结构的变化.结果表明,通过湿式粉碎和固相反应法可以制得晶体发育良好、纯度高的-βTCP粉末;复合骨水泥试样中的-βTCP在SBF溶液的浸泡下会逐步降解,从而制得具有较高孔隙率的骨水泥.

The β-tricalcium phosphate was prepared through the method of solid state reaction by using dicalcium phosphote and calcium carbonate as starting materials. The composite bone cement which was made up of β-triealcium phosphate and glass based bioactive bone cement was immersed in the simulated body fluid and its microstructure and morphology were investigated. The results demonstrate that full-fledged, high pure β-triealcium phosphate can be prepared through the method of wet pulverizing and solid state reaction, and that the porous bone cement can he prepared through the degradation of β-tricalcium phosphate in the composite bone cement.