Liu Yue-hua, Yang Xiao-jiang, Gao Xiao-hui, Li Yuan
Department of Oral and Maxillofacial Sugery, Capital Medical University School of Stomatology, Beijing 100006, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2012 Jan;47(1):6-9. doi: 10.3760/cma.j.issn.1002-0098.2012.01.003.
To analyze the relationship between Class III malocclusion and pathological changes in temporomandibular joint (TMJ) structures using magnetic resenonce imaging (MRI).
Twenty-four Class III malocclusion adult patients and 10 normal control cases were included in the study. The characteristics of lateral pertygoid muscle (LPM) in the sample group and the control group were assessed.
More pathological changes of LPM were found in Class III malocclusion adult patients (36 TMJ). The changes included hypertrophy, atrophy and contracture. And there was no relation between the pathological changes of LPM and the symptom of temporomandibular disorders (TMD).
The frequency of pathological changes of LPM was greater in patients with Class III malocclusion than in the control group.
利用磁共振成像（MRI）分析Ⅲ类错牙合与颞下颌关节（TMJ）结构病理变化之间的关系。
本研究纳入24例Ⅲ类错牙合成年患者和10例正常对照病例。评估样本组和对照组中翼外肌（LPM）的特征。
在Ⅲ类错牙合成年患者（36个颞下颌关节）中发现更多翼外肌的病理变化。这些变化包括肥大、萎缩和挛缩。并且翼外肌的病理变化与颞下颌关节紊乱症（TMD）的症状之间没有关联。
Ⅲ类错牙合患者翼外肌病理变化的发生率高于对照组。
