China Journal of Oral and Maxillofacial Surgery ›› 2021, Vol. 19 ›› Issue (5): 439-444.doi: 10.19439/j.sjos.2021.05.010

• Original Articles • Previous Articles     Next Articles

Effect of pre-surgical orthodontic treatment on the position and morphology of articular disc and condyle of temporomandibular joint

WANG Tian-ge1, ZHOU Zhi-jie1, LIN Yi-jun1, SUN Yi-ting1, CHEN Yu1, SUN Hua2, MAO Li-xia1, LIU Jia-qiang1   

  1. 1. Department of Oral and Craniomaxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011;
    2. Lintong Sanatorium Center of PLA. Xi'an 710600, Shaanxi Province, China
  • Received:2020-11-13 Revised:2021-01-27 Online:2021-09-20 Published:2021-10-20

Abstract: PURPOSE: To investigate the effect of pre-surgical orthodontic treatment on the position and morphology of articular disc and condyle of temporomandibular joint(TMJ). METHODS: Thirty patients with skeletal malocclusion was selected. The measurements were taken on MRI of TMJ. The condylar position was determined by measuring the joint space. The condylar morphology was determined by measuring the length, width and height of condyle head. The position and morphology of articular disc was determined by direct observation. The changes of the position and morphology of articular disc and condyle before and after pre-surgical orthodontic treatment in patients with skeletal Class Ⅰ,Ⅱ and Ⅲ malocclusion were observed and analyzed with SPSS 24.0 software package. RESULTS: There was no significant difference in joint spaces and joint space index, the length, width and height of condyle head, the degree of anterior disc displacement and the morphology of articular disc before and after the pre-surgical orthodontic treatment(P>0.05). CONCLUSIONS: Pre-surgical orthodontic treatment does not cause the change of the position and morphology of articular disc and condyle in patients with skeletal malocclusion.

Key words: Pre-surgical orthodontic treatment, Temporomandibular joint, Magnetic resonance imaging

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