Rabelo Katharina Alves, Sousa Melo Saulo Leonardo, Torres Marianna Guanaes Gomes, Campos Paulo Sérgio F, Bento Patrícia Meira, Melo Daniela Pita de
Private Practitioner, Department of Oral Diagnosis, State University of Paraíba, Campina Grande, PB, Brazil.
Clinical Assistant Professor, Department of Oral Pathology, Radiology and Medicine, The University of Iowa, Iowa City, IA.
J Oral Maxillofac Surg. 2017 May;75(5):938.e1-938.e10. doi: 10.1016/j.joms.2017.01.019. Epub 2017 Jan 29.
The aim of this study was to evaluate the relations of the condyle excursion angle (CEA) and the morphology and morphometry of the articular eminence to disc displacement (DD) using magnetic resonance imaging (MRI) of symptomatic patients.
MRIs of 199 temporomandibular joints (TMJs) were evaluated. Qualitative and quantitative morphologic analyses were performed with tools available in PACS 11.0 (Carestream Health, Inc, Rochester, NY). The articular eminence inclination (AEI), eminence height (EH), CEA, and articular eminence morphologic shape were evaluated. Statistical analyses were used to evaluate any possible association of the variables with DD in the closed- and open-mouth positions, age, and gender. The significance level was set at .05.
Elderly women (>60 yr) presented higher prevalence values (43.26%). There was no statistical correlation between DD and gender (P = .4290). Higher mean values of the AEI and EH were associated with box-shaped eminences. The EH, AEI, and CEA were not related to the presence or absence of DD and the different types of DD. The AEI (P = .002) and CEA (P < .001) values were higher for TMJs with disc reduction in the open-mouth position.
Disc position in the closed- and open-mouth positions is not influenced by articular eminence morphology; however, the AEI and CEA have an influence on disc reduction.
本研究旨在通过对有症状患者进行磁共振成像（MRI），评估髁突偏移角（CEA）以及关节结节的形态和形态测量与盘移位（DD）之间的关系。
对199个颞下颌关节（TMJ）的MRI进行评估。使用PACS 11.0（Carestream Health公司，纽约州罗切斯特）中的可用工具进行定性和定量形态学分析。评估关节结节倾斜度（AEI）、结节高度（EH）、CEA和关节结节形态。采用统计分析评估这些变量与闭口位和开口位时的盘移位、年龄及性别的任何可能关联。显著性水平设定为0.05。
老年女性（>60岁）的患病率较高（43.26%）。盘移位与性别之间无统计学相关性（P = 0.4290）。AEI和EH的较高平均值与箱形结节相关。EH、AEI和CEA与盘移位的有无及不同类型的盘移位无关。开口位时盘复位的TMJ的AEI值（P = 0.002）和CEA值（P < 0.001）较高。
闭口位和开口位时的盘位置不受关节结节形态的影响；然而，AEI和CEA对盘复位有影响。
