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- 2018
下颌骨重建个性化修复体暴露原因的有限元分析
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Abstract:
摘要 目的:利用有限元法分析个性化修复体重建单侧下颌骨缺损的应力应变分布情况,探讨个性化修复体术后软组织暴露的生物力学因素。方法:收集2008年9月~2011年9月行个性化修复体重建单侧下颌骨缺损术后出现软组织外露病例,共计3例。重新获得患者CT数据,利用MIMICS及Geomagic软件建立患者下颌骨及个性化修复体的三维有限元模型。根据实际螺钉固位情况及患者咬合工况,在ANSYS14.0软件中计算重建后3D模型的应力应变分布。结果:建立的有限元模型能精确分析修复体和颌骨的应力应变分布情况,修复体的应变最大区域与其临床外露的部位基本一致。结论:个性化修复体术后外露与总应变分布有关,利用三维有限元分析法可发现修复体的高应变区域,为修复体外形的优化设计提供理论支持
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