基于3D-T2加权成像评估颞下颌关节功能紊乱病患者翼外肌收缩程度  

Evaluation of Lateral Pterygoid Muscle Contraction in Patients withTemporomandibular Disorders Based on 3D-T2 Weighted Imaging

作　　者：张晓欢 刘梦琦 胡敏 王燕一 陈志晔 ZHANG Xiaohuan;LIU Mengqi;HU Min;WANG Yanyi;CHEN Zhiye(Department of Radiology,Hainan Hospital of Chinese PLA General Hospital,Sanya,Hainan 572013,China;Department of Oral and Maxillofacial Surgery,the First Medical Center of Chinese PLA General Hospital,Beijing 100853,China;Department of Stomatology,Hainan Hospital of Chinese PLA General Hospital,Sanya,Hainan 572013,China;The Second School of Clinical Medicine,Southern Medical University,Guangzhou 510515,China)

机构地区：[1]中国人民解放军总医院海南医院放射科,海南三亚572013 [2]中国人民解放军总医院第一医学中心口腔颌面外科,北京100853 [3]中国人民解放军总医院海南医院口腔科,海南三亚572013 [4]南方医科大学第二临床医学院,广州510515

出　　处：《中国医学科学院学报》2021年第4期579-583,共5页Acta Academiae Medicinae Sinicae

摘　　要：目的基于3D-T2加权成像序列采用多平面重建技术测量闭口位及张口位翼外肌长度评估颞下颌关节功能紊乱病(TMD)患者翼外肌收缩程度。方法对2019年11月至2020年4月中国人民解放军总医院海南医院放射科门诊就诊的17例TMD患者[年龄(29.82±10.70)岁,男性8例、女性9例]及13名正常志愿者[年龄(23.54±3.31)岁,男性6例、女性7例]行闭口位及张口位颞下颌关节磁共振三维T2加权成像。根据关节盘位置分为TMD并关节盘不可复性移位组(TMD-DDwoR)、TMD并关节盘可复性移位组(TMD-DDwR)、TMD并关节盘无移位组(TMDwoDD)及正常对照无关节盘移位组(NCwoDD)。采用多平面重建技术分别测量闭口位及张口位翼外肌上腹最大长度。统计学采用单因素方差分析、受试者工作特征曲线及置换检验。结果TMD-DDwoR组[(3.36±1.96)mm]翼外肌张口位收缩程度显著小于TMDwoDD组[(7.90±3.95)mm]、NCwoDD组[(8.77±3.13)mm](F=12.891,P=0.000)及TMD-DDwR组[(7.12±3.69)mm](χ^(2)=5.314,P=0.031)。结论本研究证实颞下颌关节盘不可复性移位患者翼外肌收缩程度减低,为TMD患者关节盘移位机制的研究提供了影像学证据。Objective To evaluate lateral pterygoid muscle(LPM)contraction in the patients with temporomandibular disorders(TMD)based on 3D-T2 weighted imaging(3D-T2WI).Multiplanar reconstruction(MPR)was employed to measure the length of LPM in the images taken in closed-and open-mouth positions.Methods Seventeen TMD patients[age of(29.82±10.70)years,males/females=8/9]and 13 normal volunteers[control,age of(23.54±3.31)years,males/females=6/7]received 3D-T2WI of the temporomandibular joints in closed-and open-mouth positions from November 2019 to April 2020 in Department of Radiology,Hainan Hospital of Chinese PLA General Hospital.According to the position of the discs,the subjects were classified into the following groups:TMD with disc displacement without reduction(TMD-DDwoR),TMD with disc displacement with reduction(TMD-DDwR),TMD without disc displacement(TMDwoDD),and normal control without disc displacement(NCwoDD).MPR was employed to measure the maximal length of the superior belly of LPM.One-way analysis of variance,receiver operating characteristic curve,and permutation test were employed for the statistical analyses.Results The contraction of LPM was significantly shorter in TMD-DDwoR group[(3.36±1.96)mm]than in TMDwoDD group[(7.90±3.95)mm],NCwoDD group[(8.77±3.13)mm](F=12.891,P=0.000),and TMD-DDwR group[(7.12±3.69)mm](χ^(2)=5.314,P=0.031).Conclusion This study confirmed that the contraction of LPM decreased in patients with TMD-DDwoR,which provided imaging evidence for the study of disc displacement mechanism in TMD patients.

关 键 词：颞下颌关节紊乱病 翼外肌 颞下颌关节盘移位 磁共振成像 

分 类 号：R782.6[医药卫生—口腔医学] R445.2[医药卫生—临床医学]