应用等离子体浸没离子注入装置对纯Ti表面进行氟离子注入,通过SEM和XPS分析研究材料的表面形貌和化学组成.将MG-63成骨细胞接种于氟离子注入前、后的Ti样品表面,采用激光共聚焦显微镜观察材料表面对成骨样细胞MG-63I型胶原形成的影响;逆转录聚合酶链反应检测I型胶原mRNA的表达;蛋白印迹法检测I型胶原蛋白的表达.结果表明,氟离子注入后Ti样品表面新出现TiF3;且MG-63细胞在其表面分别培养6,24和48 h后,I型胶原的形成和表达均明显高于纯Ti表面.含氟表面改性层可提高Ti材料的生物相容性.
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