下颌后缩功能矫治前后牙骨肌的变化研究

doi:10.13701/j.cnki.kqyxyj.2022.08.011

口腔医学研究 ›› 2022, Vol. 38 ›› Issue (8): 752-756.DOI: 10.13701/j.cnki.kqyxyj.2022.08.011

下颌后缩功能矫治前后牙骨肌的变化研究

储梦诗, 郎鑫, WASEEM SALEH AL-GUMAEI, 秦容, 张昕宇, 郑艳^*

兰州大学口腔医学院甘肃兰州 730000

收稿日期:2022-03-15 出版日期:2022-08-28 发布日期:2022-08-24
通讯作者: *郑艳,E-mail:15609310015@163.com
作者简介:储梦诗(1995~ ),女,河南人,医师,硕士,研究方向:口腔正畸临床。

Changes of TMJ, Muscle, and Occlusion Before and After Mandibular Retrusion Treatment

CHU Mengshi, LANG Xin, WASEEM SALEH AL-GUMAEI, QIN Rong, ZHANG Xinyu, ZHENG Yan^*

School of Stomatology, Lanzhou University, Lanzhou 730000, China

Received:2022-03-15 Online:2022-08-28 Published:2022-08-24

摘要/Abstract

摘要： 目的: 通过测量功能矫治前后关节,肌肉,咬合相关指标的变化,分析各因素之间的内在联系,探究其与下颌骨生长和功能矫治稳定性的关系。方法: 选取已完成功能矫治的Ⅱ类下颌后缩儿童21例,测量治疗前后CBCT影像中牙骨肌咬合的变化,并对结果进行分析。结果: 矫治后髁突长短轴颈增大,关节上、后间隙增大;关节窝间距与宽度增大;咬肌方向近中倾斜角度减小;牙合平面顺时针旋转,下切牙唇倾度增加。以上数据均有统计学意义(P＜0.05)。结论: 下颌后缩患者治疗后虽然关节发生适应性改建,但咬肌方向与最大咬合力方向之间出现不协调,牙合平面的顺旋,下前牙唇倾等变化可能对下颌骨矢状向生长和疗效的稳定性有不利影响。

关键词: 下颌后缩, 颞颌关节, 咬肌, 咬合

Abstract: Objective: To investigate the changes of joint, muscle, and occlusal related indexes before and after functional orthodontic treatment, analyze the internal relationship between the factors, and explore their relationship with mandibular growth and stability of functional orthodontic treatment. Methods: Twenty-one children with Class Ⅱ mandibular retrusion who had completed functional orthodontic treatment were selected. The changes of TMJ, muscle, and occlusion before and after treatment were measured through CBCT images, and the results were analyzed. Results: After treatment, the length of condyle neck increased, the supracondylar and posterior spaces increased, the glenoid fossa distance and width increased, the mesial inclination angle of masseter muscle direction decreased, the occlusal plane rotated clockwise, and the labial inclination of lower incisors increased. The above changes were statistically significant (P<0.05). Conclusion: After treatment, although the adaptive remodeling of joints occurs in patients with mandibular retrusion, an incoordination exists between the direction of masseter muscle and the maximum occlusal force, and the changes of occlusal plane, lower anterior labial inclination, etc. may adversely affect the sagittal growth of mandible and the stability of curative effect.

Key words: mandibular retrusion, temporomandibular joint, glenoid fossa, masseter muscle

储梦诗, 郎鑫, WASEEM SALEH AL-GUMAEI, 秦容, 张昕宇, 郑艳. 下颌后缩功能矫治前后牙骨肌的变化研究[J]. 口腔医学研究, 2022, 38(8): 752-756.

CHU Mengshi, LANG Xin, WASEEM SALEH AL-GUMAEI, QIN Rong, ZHANG Xinyu, ZHENG Yan. Changes of TMJ, Muscle, and Occlusion Before and After Mandibular Retrusion Treatment[J]. Journal of Oral Science Research, 2022, 38(8): 752-756.

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下颌后缩功能矫治前后牙骨肌的变化研究

Changes of TMJ, Muscle, and Occlusion Before and After Mandibular Retrusion Treatment

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