下颌骨重建个性化修复体暴露原因的有限元分析

doi:10.13701/j.cnki.kqyxyj.2018.04.020

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (4): 424-427.DOI: 10.13701/j.cnki.kqyxyj.2018.04.020

下颌骨重建个性化修复体暴露原因的有限元分析

李鹏¹, 邵小云¹, 李燕玲¹, 黄达鸿¹, 曾华江², 汤炜^3*

1. 佛山科学技术学院附属口腔医院/佛山市口腔医院广东佛山 528000;
2. 佛山市智能臻德齿科有限公司广东佛山 528000;
3. 四川大学华西口腔医学院,创伤整形外科四川成都 610000

收稿日期:2017-11-13 出版日期:2018-04-28 发布日期:2018-04-25
通讯作者: 汤炜,E-mail:mydrtw@vip.sina.com
作者简介:李鹏(1978~ ),男,四川江油人,博士,主治医师,主要从事数字化技术辅助颌面修复研究。
基金资助:
国家自然科学基金(编号:51672276)佛山科学技术学院学术基金项目

Finite Element Analysis on Exposure of Individual Endoprosthesis for Mandibular Reconstruction.

LI Peng¹, SHAO Xiao-yun¹, LI Yan-ling¹, HUANG Da-hong¹, ZENG Hua-jiang², TANG Wei³

1. School of Stomatology, Foshan University, Foshan 528000, China;
2. Foshan Perfect Zhende Denture Co.,Ltd, Foshan 528000, China;
3. Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu 610041, China.

Received:2017-11-13 Online:2018-04-28 Published:2018-04-25

摘要/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。

关键词: 个性化修复体, 下颌骨缺损, 有限元分析

Abstract: Objective: To explore stress and strain distribution of individual endoprosthesis for the reconstruction of unilateral mandibular defect with finite element method, and discuss the biomechanical factors of postoperative exposure of individual endoprosthesis. Methods: From September 2008 to September 2011, there were three cases of implant exposure after mandibular reconstruction. The CT data of patients were reacquired, and three-dimensional finite element model of the mandible and implant was established in MIMICS and Geomagic softwares. According to the actual condition of screw fixation and occlusion of patients, stress-strain distribution of the reconstruction model was calculated in ANSYS14.0 software. Results: The finite element model can accurately analyze the stress-strain of reconstruction model of mandibular defect. The maximum strain area of implant is basically located nearby the exposed parts. Conclusion: The postoperative exposure of individual endoprosthesis is correlated with the strain distribution. The finite element analysis can discover strain clusters and provide theoretical support for optimization design of the implant.

Key words: Individual endoprosthesis, Mandibular reconstruction, Finite element analysis

李鹏, 邵小云, 李燕玲, 黄达鸿, 曾华江, 汤炜. 下颌骨重建个性化修复体暴露原因的有限元分析[J]. 口腔医学研究, 2018, 34(4): 424-427.

LI Peng, SHAO Xiao-yun, LI Yan-ling, HUANG Da-hong, ZENG Hua-jiang, TANG Wei. Finite Element Analysis on Exposure of Individual Endoprosthesis for Mandibular Reconstruction.[J]. Journal of Oral Science Research, 2018, 34(4): 424-427.

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下颌骨重建个性化修复体暴露原因的有限元分析

Finite Element Analysis on Exposure of Individual Endoprosthesis for Mandibular Reconstruction.

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