摘要
目的 比较纳米羟基磷灰石 (nHA)和常规羟基磷灰石 (cHA)骨细胞相容性方面的差异。方法 采用化学沉淀法制备nHA粉体 ,采用压制成型和无压烧结工艺制备nHA与cHA的块体材料。建立Wistar乳鼠体外原代分离培养成骨细胞实验模型 ,将细胞分别接种于nHA与cHA的表面 ,观察 1、3、5、7d时细胞在材料表面的形态变化和增殖情况。结果 制备的nHA与cHA的平均粒径分别为 5 5nm和 780nm。在nHA与cHA材料表面 ,成骨细胞能正常粘附、伸展、增殖 ,附着形态未见明显的差异。与cHA比较 ,成骨细胞更易于在nHA表面吸附。结论 与相应的cHA比较 ,成骨细胞与nHA间具有更好的骨细胞相容性。
Objective To evaluate the cytocompatibility of nanophase hydroxyapatite ceramics in vitro.Methods Hydroxyapatite(HA) was prepared via wet method. The grain size of the hydroxyapatite in the study was determined by scanning electron microscope and atomic force microscope with image analysis software. Primary osteoblast culture was established from rat calvaria. Cell adherence and proliferation on nanophase hydroxyapatite ceramics and conventional hydroxyapatite ceramics were examined at 1, 3, 5, 7 days. Morphology of the cells was observed by microscope.Results The average grain size of the nanophase and conventional HA was 55 nm and 780 nm, respectively. Throughout 7 days period, osteoblast proliferation on the HA was similar to that on tissue culture borosilicate glass controls, osteoblasts could attach, spread and proliferate on HA. However, compared to conventional ceramics, osteoblast proliferation on nanophase HA was significantly better after1,3,5 and 7 days.Conclusion Cytocompatibility of nanophase HA was significantly better than conventional ceramics.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2004年第6期456-459,共4页
West China Journal of Stomatology
基金
吉林省科技发展计划资助项目 (2 0 0 30 4 2 4_0 2 )
