下颌骨正中牵引成骨系统有限元模型的建立

doi:10.3969/j.issn.1005-4979.2013.05.002

《口腔颌面外科杂志》 ›› 2013, Vol. 23 ›› Issue (5): 330-335. doi: 10.3969/j.issn.1005-4979.2013.05.002

下颌骨正中牵引成骨系统有限元模型的建立

李彪，孙昊，张雷，沈国芳，王旭东

上海交通大学医学院附属第九人民医院口腔颅颌面科，上海市口腔医学重点实验室，上海 200011

出版日期:2013-10-28 发布日期:2014-01-14
通讯作者: 王旭东，教授. E-mail:xudongwang70@hotmail.com
作者简介:李彪（1988—），男，江西人，硕士研究生. E-mail: skybill@126.com
基金资助:
国家自然科学基金资助项目（81271122）；上海市自然科学基金资助项目（10ZR1418000）；上海市卫生局资助项目（2009077）

Fabrication of a Finite Element Model on the Study of Mandible Symphyseal
Distraction Osteogenesis

LI Biao, SUN Hao，ZHANG Lei，SHEN Guo-fang，WANG XU-dong

Department of Oral and Craniomaxillofacial Science, The Ninth People’s Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China

Online:2013-10-28 Published:2014-01-14

摘要/Abstract

摘要： 目的：建立使用3种不同牵引器（牙支持式、骨支持式和混合支持式）的下颌骨正中牵引成骨系统的有限元模型。方法：使用人体颌面部标准解剖模型，通过激光扫描，建立下颌骨、牙列和颞下颌关节盘的三维几何模型。描绘出颞下颌关节囊轮廓并生成关节囊几何模型。将下颌骨几何模型和3种牵引器简化几何模型导入有限元建模软件中，建立3种牵引器的下颌骨正中牵引成骨系统的有限元模型。结果：成功建立了使用3种牵引器下，颞下颌关节可自行旋转的下颌骨正中牵引成骨的有限元模型。结论：该模型仿真程度高，接近临床实际，为后续研究下颌骨正中牵引成骨对颞下颌关节的生物力学影响，提供了良好的实验平台。

关键词: 有限元模型, 下颌扩弓, 下颌骨正中牵引成骨

Abstract: Objective: To fabricate a finite element model (FEM) of mandible symphyseal distraction osteogenesis (MSDO), which contains tooth-borne type, bone-borne type and hybrid type distractors. Methods: A virtual model of the mandible was produced from laser scanning data of a standard anatomical model of human skull. The outline of the articular capsule was manually drawn and modeled. Three types of distractors were simulated by simplified models. The FEM of MSDO with three types of distractors was generated based on these virtual models. As the boundary conditions, the mandible was supported by restraining all the movements at the articular fossa. The condyle and the disk could move automatically according to the stress during the simulation of the distraction. Results: A high emulational FEM of MSDO was successfully fabricated. Conclusion: This FEM of MSDO has high degree clinical simulation, which can provide a platform for further research of biomechanical effect of midsymphyseal distraction osteogenesis with three types of distractors on the mandible and articular disc.

Key words: finite element model, mandible widening, mandible symphyseal distraction osteogenesis

中图分类号:

李彪，孙昊，张雷，沈国芳，王旭东. 下颌骨正中牵引成骨系统有限元模型的建立[J]. 《口腔颌面外科杂志》, 2013, 23(5): 330-335.

LI Biao, SUN Hao，ZHANG Lei，SHEN Guo-fang，WANG XU-dong. Fabrication of a Finite Element Model on the Study of Mandible Symphyseal
Distraction Osteogenesis[J]. 《Journal of Oral and Maxillofacial Surgery》, 2013, 23(5): 330-335.

https://journal06.magtech.org.cn/Jweb_joms/CN/Y2013/V23/I5/330

参考文献

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[10] Gunbay T, Akay MC, Aras A, et al. Effects of transmandibular symphyseal distraction on teeth, bone, and temporomandibular joint [J]. J Oral Maxillofac Surg, 2009， 67(10): 2254-2265.

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下颌骨正中牵引成骨系统有限元模型的建立

Fabrication of a Finite Element Model on the Study of Mandible Symphyseal
Distraction Osteogenesis

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Fabrication of a Finite Element Model on the Study of Mandible Symphyseal
Distraction Osteogenesis