不同牙 合  位时翼外肌对颞下颌关节盘的生物力学影响

doi:10.13418/j.issn.1001-165x.2017.04.013

中国临床解剖学杂志 ›› 2017, Vol. 35 ›› Issue (4): 419-424.doi: 10.13418/j.issn.1001-165x.2017.04.013

不同牙合位时翼外肌对颞下颌关节盘的生物力学影响

殷学民¹，　张琰¹，　李子文²，　刘啸³，　宋梦阳¹，　王方圆¹，　刘小豪¹

1.南方医科大学南方医院口腔颌面外科, 广州 510515；　2.厦门市口腔医院口腔颌面外科, 厦门 361000;
3.上海交通大学医学院附属仁济医院口腔颌面外科, 上海 200127

收稿日期:2017-03-06 出版日期:2017-07-25 发布日期:2017-08-30
作者简介:殷学民（1965-），男，博士，教授，硕士生导师,主要从事口腔颌面外科的临床工作，Tel：020-61642022，E-mail: yinxm@smu.edu.cn
基金资助:
广东省科技计划项目(2014A020212397)

Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint under different occlusal position

YIN Xue-min¹, ZHANG Yan¹, LI Zi-wen², LIU Xiao³, SONG Meng-yang¹, WANG Fang-yuan¹, LIU Xiao-hao¹

1. Department of Oral and Maxillofacial Surgery,NanfangHospital, Southern Medical University, Guangzhou 510515, China; 2. Department of Oral and Maxillofacial Surgery,Xiamen oral hospital, Xiamen 361000, China; 3. Renji Hospital of Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China

Received:2017-03-06 Online:2017-07-25 Published:2017-08-30

摘要/Abstract

摘要：

目的　研究在牙尖交错位和最大张口位时可复性关节盘前移位中翼外肌对关节盘的生物力学影响及两牙合位之间的差异。方法　对已经建立的可复性关节盘前移位的颞下颌关节数字化仿真模型，在不同牙合位时进行翼外肌加载，通过三维有限元的方法进行生物力学分析。结果　最大张口位时，关节盘应力集中区较牙尖交错位时向前外侧移动，集中于关节盘中间带偏外侧区；关节盘中间带与关节盘后带之间存在明显位移差，形成位移撕裂带，而在牙尖交错位时则无类似位移差现象。结论　在可复性关节盘前移位中，最大张口位时翼外肌可导致关节盘中间带偏外侧区的应力集中，在关节盘中间带形成位移撕裂带，导致此区域变薄、穿孔甚至撕裂。

关键词: 颞下颌关节盘, 　翼外肌, 　可复性关节盘前移位, 　生物力学

Abstract:

Objective　To analyze the effect of lateral pterygoid muscle on anterior disc displacement with reduction of temporomandibular joint (TMJ) under different occlusal position.　Methods　Lateral pterygoid muscle was loaded under different occlusal position to simulate and biomechanically analyze the TMJ anterior disc displacement with reduction by using the established digital simulation model.　Results　Under the maximum jaw opening status, the disc region with the highest stress concentration occurred in the lateral part of the intermediate zone; the tendency of displacement appeared between the intermediate zone and the posterior band to form a tearing region. Under the intercuspal position, the disc region with the highest stress concentration occurred in the posteroir band and there was not a tearing region between the intermediate zone and the poster band.　Conclusions　The results indicate that the function of the lateral pterygoid muscles can lead to the stress concentration on intermediate zone of the articular disc under the maximum jaw opening status, resulting in a tearing region in the articular disc.

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

殷学民，张琰，李子文，刘啸，宋梦阳，王方圆，刘小豪. 不同牙合位时翼外肌对颞下颌关节盘的生物力学影响[J]. 中国临床解剖学杂志, 2017, 35(4): 419-424.

YIN Xue-min, ZHANG Yan, LI Zi-wen, LIU Xiao, SONG Meng-yang, WANG Fang-yuan, LIU Xiao-hao. Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint under different occlusal position[J]. Chinese Journal Of Clinical Anatomy, 2017, 35(4): 419-424.

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不同牙合位时翼外肌对颞下颌关节盘的生物力学影响

Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint under different occlusal position

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不同牙 合 位时翼外肌对颞下颌关节盘的生物力学影响

Effect of the lateral pterygoid muscle on the anterior disc displacement with reduction of temporomandibular joint under different occlusal position

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使用本文

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不同牙合位时翼外肌对颞下颌关节盘的生物力学影响