华西口腔医学杂志 ›› 2021, Vol. 39 ›› Issue (2): 203-208.doi: 10.7518/hxkq.2021.02.012

• 颞下颌关节专栏 • 上一篇    下一篇

可复性关节盘前移位对颞下颌关节三维形态学参数的影响

滕海东(), 舒敬恒, 孙庭晖, 潘识宇, 刘展()   

  1. 四川大学生物力学工程四川省重点实验室,成都 610065
  • 收稿日期:2020-02-15 修回日期:2020-08-31 出版日期:2021-04-01 发布日期:2021-04-09
  • 通讯作者: 刘展 E-mail:1187627224@qq.com;bmeliuzhan@163.com
  • 作者简介:滕海东,学士,E-mail:1187627224@qq.com
  • 基金资助:
    国家自然科学基金(31670963)

Three-dimensional morphological changes in the temporomandibular joints of patients with anterior disc displacement with reduction

Teng Haidong(), Shu Jingheng, Sun Tinghui, Pan Shiyu, Liu Zhan()   

  1. Key Laboratory for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu 610065, China
  • Received:2020-02-15 Revised:2020-08-31 Online:2021-04-01 Published:2021-04-09
  • Contact: Liu Zhan E-mail:1187627224@qq.com;bmeliuzhan@163.com
  • Supported by:
    The National Natural Science Foundation of China(31670963)

摘要: 目的

通过三维形态学测量方法探究可复性关节盘前移患者(ADDwR)与正常人颞下颌关节(TMJ)的差异。

方法

招募了15名ADDwR患者和10名无症状的正常人,在MIMICS 20.0软件中重建出上、下颌骨的三维模型,在三维模型上测量双侧TMJ的9个形态学参数,分析ADDwR患者患病侧与正常人两侧之间的差异。

结果

ADDwR患者患侧的水平髁突角、冠状髁突角均显著大于正常人(P<0.01),矢状升支角、关节腔内间隙、关节腔外间隙、关节腔上间隙、关节腔前间隙和关节腔后间隙均显著小于正常人(P<0.01)。

结论

ADDwR将导致患病侧的髁突角显著大于正常人,下颌矢状升支角、关节间隙显著小于正常人,从而导致髁突向上移位,更接近关节窝。

关键词: 关节盘前移位, 三维形态学, 颞下颌关节, 颞下颌关节紊乱病

Abstract: Objective

To investigate the differences in the temporomandibular joints (TMJs) between patients with anterior disc displacement with reduction (ADDwR) and asymptomatic subjects by using 3D morphometric measurements.

Methods

A total of 15 patients with ADDwR and 10 asymptomatic subjects were enrolled. Then, 3D models of the maxilla and mandible were reconstructed using MIMICS 20.0. Nine morphologic parameters of TMJs on both sides were measured on the 3D solid model. The differences in the parameters were analyzed between the patients and the asymptomatic subjects and between the left and right sides of each group.

Results

The horizontal and coronal condylar angles on the ipsilateral side of the patients were significantly greater than those of the asymptomatic subjects (P<0.01). Meanwhile, the sagittal ramus angle (SRA), medial joint space, lateral joint space, superior joint space, anterior joint space, and posterior joint space in the patients were significantly lower than those in the asymptomatic subjects (P<0.01).

Conclusion

ADDwR will increase the condylar angles to be significantly greater than the normal level and decrease SRA and articular spaces to be significantly smaller than the normal level. The condyles will be displaced upward, closer to the fossa.

Key words: anterior disc displacement, three-dimensional morphology, temporomandibular joint, temporomandibular disorder

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