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微弧氧化处理纯钛种植体骨内植入的实验研究 被引量:1

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摘要 【目的】通过动物实验研究纯钛种植体表面经微弧氧化(Micro-arc Oxidation,MAO)工艺处理后的成骨效能。【方法】将36枚(18枚纯钛种植体为对照组,18枚微弧氧化处理后的纯钛种植体为研究组)植入9只成年Beggle犬下颌骨内,使种植体在无负荷的条件下愈合。采用扫描电镜、顶出实验、光学组织学观察和计算机定量组织形态学评价等方法,对植入4周、8周和12周种植体的生物力学稳定性及界面特点进行观察测量和评估,实验数据用SPSS统计软件进行统计分析。【结果】两种种植体都产生骨结合,但扫描电镜和光学组织学观察结果显示微弧氧化组比纯钛对照组成骨更早,骨形成量更多;计算机定量组织学观察结果显示微弧氧化组12周的骨—种植体结合率是65.85%,高于纯钛对照组的7.37%;顶出实验结果显示,两组种植体结合力随时间逐渐升高,同组之间不同时间点的骨结合力有明显的统计学差异(P<0.01),微弧氧化组的4周、8周和12周的骨结合力分别是71.4,147.2和266.3MPa,远远高于对照纯钛组的4.3,7.1和11.8MPa。【结论】纯钛种植体经微弧氧化工艺处理后可以提高其表面的生物活性,研究结果还表明经微弧氧化处理过的钛种植体可以促进新骨形成,缩短骨结合时间,增强骨结合力。
出处 《中山大学学报(医学科学版)》 CAS CSCD 北大核心 2008年第S2期5-8,22,共5页 Journal of Sun Yat-Sen University:Medical Sciences
基金 广东省科技发展基金(2005B10101047) 广东省科技发展基金(2006B12501001)
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