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分别用四种添加剂(含K+与Na+的磷酸氢盐水溶液)调和α-TCP/DCPD骨水泥系统,并将硬化物浸入37℃的生理盐水(0.9%)中,对不同添加剂和浸入时间的骨水泥硬化物进行了相成分、化学成分、显微结构与力学强度等分析,将骨水泥植入兔的股骨肌肉中进行了动物实验考察,再用光镜观察植入样品的组织学切片.结果表明,所研制的骨水泥最大抗压强度可达15MPa,且具有良好的生物相容性和生物活性.着重探讨了骨水泥抗压强度与浸入时间和相成分等的关系.
The α-TCP / DCPD bone cement system was reconstituted with four additives (aqueous solution of K + and Na + in phosphate buffered saline), and the hardened material was immersed in physiological saline (0.9%) at 37 ° C for different additives and immersion time Of the bone cement hardened material phase composition, chemical composition, microstructure and mechanical strength analysis, the bone cement was implanted in the rabbit femur muscle animal experiments were investigated, and then observed by light microscopy histological sections implanted samples . The results show that the maximum compressive strength of the developed bone cement up to 15MPa, and has good biocompatibility and biological activity. The relationship between compressive strength of cement and immersion time, phase composition and so on are emphatically discussed.