Hirsch Christian, John Mike T, Drangsholt Mark T, Mancl Lloyd A
Department of Preventive Dentistry and Pediatric Dentistry, School of Dentistry, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
J Orofac Pain. 2005 Summer;19(3):218-25.
Since occlusal variables such as overbite and overjet have been thought to be associated with temporomandibular disorders (TMD), and joint sounds are some of the most prevalent signs of TMD, the aim of this study was to determine whether overbite and overjet are risk factors for temporomandibular joint (TMJ) sounds.
A population-based cross-sectional study of 3,033 subjects (age range, 10 to 75 years; 53% female) was conducted in Germany. Overbite/overjet, reproducible reciprocal clicking (RRC) during open-close jaw movements that did not occur in the protrusive jaw position, and joint crepitus were assessed according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD).
When age and gender were controlled for, high or low values of overbite and overjet were not associated with a greater risk of RRC and crepitus as compared to a reference category of a normal overbite and overjet of 2 to 3 mm (multiple logistic regression; odds ratios 0.7 to 1.3; P > .05 for all).
This study showed that higher or lower overbite or overjet jaw relationships, even extreme values, are not risk factors for TMJ sounds as assessed by clinical examination.
由于诸如覆牙合和覆盖等咬合变量被认为与颞下颌关节紊乱病（TMD）相关，并且关节弹响是TMD最常见的体征之一，本研究的目的是确定覆牙合和覆盖是否为颞下颌关节（TMJ）弹响的危险因素。
在德国对3033名受试者（年龄范围10至75岁；53%为女性）进行了一项基于人群的横断面研究。根据颞下颌关节紊乱病研究诊断标准（RDC/TMD）对覆牙合/覆盖、在开合颌运动中出现但在颌前伸位未出现的可重复性相互弹响（RRC）以及关节摩擦音进行评估。
在对年龄和性别进行控制后，与覆牙合和覆盖为2至3mm的正常参考类别相比，覆牙合和覆盖的高值或低值与RRC和摩擦音的更高风险无关（多因素逻辑回归；比值比0.7至1.3；所有P>.05）。
本研究表明，通过临床检查评估，更高或更低的覆牙合或覆盖颌关系，即使是极端值，也不是TMJ弹响的危险因素。
