翼外肌对可复性颞下颌关节盘前移位的作用机制

中国口腔颌面外科杂志 ›› 2015, Vol. 13 ›› Issue (1): 7-10.

翼外肌对可复性颞下颌关节盘前移位的作用机制

殷学民, 李子文, 刘啸, 宋梦阳

南方医科大学南方医院口腔颌面外科,南方医科大学口腔医学院,广东广州 510515

收稿日期:2014-09-26 出版日期:2015-02-10 发布日期:2015-03-12
通讯作者: 殷学民,Tel:020-61642022,E-mail:yinxm@fimmu.com
作者简介:殷学民（1965-）,男,博士,教授,硕士研究生导师

Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint

YIN Xue-min, LI Zi-wen, LIU Xiao, SONG Meng-yang

Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University College of Stomatology, Southern Medical University. Guangzhou 510515, Guangdong Province, China

Received:2014-09-26 Online:2015-02-10 Published:2015-03-12
About author:Supported by Science and Technology Planning Project of Guangdong Province (2012B031800144), and the New Technology, New Project of Nanfang Hospital (201118)
Supported by:
广东省科技计划项目（2012B031800144）; 南方医院新技术、新项目（201118）

摘要/Abstract

摘要： 目的分析可复性关节盘移位中翼外肌作用下颞下颌关节的应力分布情况。方法利用已建立的可复性关节盘前移位颞下颌关节数字化仿真模型,在单纯翼外肌加载下进行生物力学分析。结果关节盘应力集中于关节盘中间带偏外侧区域;髁突及关节窝应力主要集中于与关节盘相接触的功能面。在颞下颌关节盘的位移分布中,从关节盘前带至关节盘中间带,位移趋势逐渐增大,关节盘中间带与关节盘后带之间出现位移撕裂带,从关节盘中间带至关节盘双板区位移逐渐递减;而颞下颌关节整体位移最大值出现在关节囊前份的翼外肌上头附着区。结论在可复性关节盘前移位中翼外肌可导致关节盘中间带偏外侧区域的应力集中,可能导致此区域关节盘变薄、穿孔甚至撕裂。

关键词: 可复性关节盘前移位, 颞下颌关节, 翼外肌, 生物力学

Abstract: PURPOSE: To analyze the effect of lateral pterygoid muscle on anterior disc displacement with reduction of temporomandibular joint (TMJ). METHODS: Lateral pterygoid muscle was loaded to simulate and biomechanically analyze the TMJ anterior disc displacement with reduction by using the established digital simulation model. RESULTS: The disc region with the highest stress concentration occurred in the lateral part of the intermediate zone; The highest stress of the condyle and articular fossa was concentred on the functional region between the disc. The tendency of displacement gradually increased from the anterior zone to the intermediate zone; from the intermediate zone to the bilaminar region while the tendency gradually reduced. The maximum TMJ displacement appeared in the joint capsule, which was the area of the attachment of the inferior side of the lateral pterygoid muscle. CONCLUSIONS: The results indicate that the function of the lateral pterygoid muscles may lead to the thinning of the articular disc or perforation.

Key words: Anterior disc displacement with reduction, Temporomandibular joint, Lateral pterygoid muscle, Biomechanics

中图分类号:

R782.6

殷学民, 李子文, 刘啸, 宋梦阳. 翼外肌对可复性颞下颌关节盘前移位的作用机制[J]. 中国口腔颌面外科杂志, 2015, 13(1): 7-10.

YIN Xue-min, LI Zi-wen, LIU Xiao, SONG Meng-yang. Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint[J]. China J Oral Maxillofac Surg, 2015, 13(1): 7-10.

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