为了加速钛种植体与骨组织直接实现骨整合的速度,采用表面物理和化学方法处理钛基片,通过控制其在模拟体液中的表面矿化过程,获得适当密度的磷灰石多晶核.用SEM观察磷灰石多晶核的表面形貌和大小,对晶粒平均粒径和间距进行统计;用精密酸度计检测模拟体液的pH值;同时,讨论磷灰石多晶核的形成条件和过程.结果表明,通过控制钛表面粗糙度、氮氧化钠溶液浓度、浸泡的时间,可以在钛表面制备一定密度分布的磷灰石多晶核,且多晶核间距小于骨细胞线度(10-30μm).
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