微型钛板与生物可吸收板在下颌骨骨切开术固定中的应力比较

doi:10.19439/j.sjos.2020.03.003

上海口腔医学 ›› 2020, Vol. 29 ›› Issue (3): 237-241.doi: 10.19439/j.sjos.2020.03.003

微型钛板与生物可吸收板在下颌骨骨切开术固定中的应力比较

韩婧¹, 解东平², 王慧珊¹, 周子疌¹, 刘剑楠¹

1.上海交通大学医学院附属第九人民医院·口腔医学院口腔颌面-头颈肿瘤科, 国家口腔疾病临床医学研究中心,上海市口腔医学重点实验室,上海市口腔医学研究所,上海 200011;
2.江苏时间环三维科技有限公司,江苏南通 226005

收稿日期:2019-09-26 修回日期:2019-12-20 出版日期:2020-06-25 发布日期:2020-07-29
通讯作者: 刘剑楠,E-mail: laurence_ljn@163.com
作者简介:韩婧（1985-）,女,博士,E-mail: hanjing0808@163.com
基金资助:
国家自然科学基金（8190030324）; 上海市卫生系统优秀人才培养计划（2018YQ34）

Comparison of the stress distribution of microtitanium and bioresorbable plates in fixation of mandibulotomy

HAN Jing¹, XIE Dong-ping², WANG Hui-shan¹, ZHOU Zi-jie¹, LIU Jian-nan¹

1. Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University; National Clinical Research Center for Oral Disease; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology. Shanghai 200011;
2. Jiangsu Ouring 3D Technology Co. ,Ltd. . Nantong 226005, Jiangsu Province, China

Received:2019-09-26 Revised:2019-12-20 Online:2020-06-25 Published:2020-07-29

摘要/Abstract

摘要： 目的比较微型钛板和生物可吸收板在下颌骨骨切开术固定中的应力分布。方法建立下颌骨切开术不同内固定系统三维模型,进行三维有限元分析,比较相同加载力条件下,不同植入物的应力分布以及骨折段位移的改变情况。结果钛板上受的最大应力值为49.8 MPa,可吸收板的最大应力值为4.42 MPa;钛板的最大应力值远远超过可吸收板的最大应力值,但所受应力均小于各自的屈服极限。相对移位对比可见,微型钛板固定下颌骨时,最大位移值为0.1 mm;应用可吸收板固定时,最大位移值为0.2 mm,两者的相对位移均较小。结论生物可吸收固定系统的刚度和内部强度足以支持下颌骨切开术部位的骨愈合。

关键词: 钛板, 可吸收板, 下颌骨切开术, 有限元分析

Abstract: PURPOSE: The aim of this study was to compare the stress distribution of microtitanium plate and bioresorbable plates in fixation of mandibulotomy. METHODS: Three dimensional models of different internal fixation systems in mandibular resection were established, and three dimensional finite element analysis was carried out to compare the displacement changes of fracture segments and stress distribution of titanium plates under the same stress conditions. RESULTS: The maximum stress value of titanium plate was 49.8 MPa, and that of absorbable plate was 4.42 MPa. The maximum stress value of titanium plate was far greater than that of absorbable plate. However, all the stresses were less than their yield limits. It can be seen from the relative displacement comparison that when the mini-titanium plate was fixed on the mandible, the maximum displacement value was 0.1 mm; when absorbable plate was used for fixation, the maximum displacement value was 0.2 mm, and the relative displacement of both plates was small. CONCLUSIONS: These results suggest that the stiffness and internal strength of bioabsorbable fixation system are sufficient to support bone healing at the mandible site.

Key words: Titanium plate, Bioresorbable plates, Mandibulotomy, Finite element analysis

中图分类号:

R739.8

韩婧, 解东平, 王慧珊, 周子疌, 刘剑楠. 微型钛板与生物可吸收板在下颌骨骨切开术固定中的应力比较[J]. 上海口腔医学, 2020, 29(3): 237-241.

HAN Jing, XIE Dong-ping, WANG Hui-shan, ZHOU Zi-jie, LIU Jian-nan. Comparison of the stress distribution of microtitanium and bioresorbable plates in fixation of mandibulotomy[J]. Shanghai Journal of Stomatology, 2020, 29(3): 237-241.

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微型钛板与生物可吸收板在下颌骨骨切开术固定中的应力比较

Comparison of the stress distribution of microtitanium and bioresorbable plates in fixation of mandibulotomy

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