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- 2018
选择性激光烧结技术制作的双相磷酸钙骨组织工程支架的工艺和生物学性能
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Abstract:
摘要 目的:利用选择性激光烧结技术制作多孔的双相磷酸钙的骨组织工程支架,并检测其生物相容性。方法:利用选择性激光烧结机和马弗炉,将混匀的环氧树脂和双相磷酸钙粉末进行2次烧结,去除环氧树脂,得到多孔的双相磷酸钙支架,再利用X射线衍射技术和红外光谱法分析材料的组成,使用扫描电镜观察双相磷酸钙支架的表面形貌。接种到支架上的小鼠胚胎成骨细胞前体细胞(MC3T3-E1)培养1周后,使用共聚焦显微镜观察细胞的形貌;培养2周后,CCK-8试剂检测细胞活力,活死细胞染色观察。结果:经过烧结后,双相磷酸钙支架内的环氧树脂被完全去除,支架的表面可观察到多孔结构,MC3T3-E1细胞在材料表面伸展性好。CCK-8检测结果表明,培养10 d后,生长在支架的细胞与生长在孔板的细胞活力无差异性。结论:选择性激光烧结技术制作的双相磷酸钙支架具有多孔结构以及良好的生物相容性,可作为骨组织工程支架的备选材料
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