Federal University of Bahia, School of Dentistry, Salvador, Brazil.
Int J Oral Maxillofac Surg. 2013 Jun;42(6):765-70. doi: 10.1016/j.ijom.2013.01.004. Epub 2013 Mar 9.
The aim of this study was to evaluate the relationship between biometric parameters of the components of the temporomandibular joint (TMJ), articular disc displacement, and TMJ pain. Magnetic resonance imaging (MRI) examinations of 185 patients were assessed (39 males and 146 females (370 TMJs), mean age 41.3 years, range 18-79 years). The antero-posterior length of the condyle was measured in its medial and lateral regions, as well as the transverse length of the condyle. Possible associations between linear measurements of the condyle, presence of disc displacement, and joint pain were tested. Although pain was more commonly reported among patients with disc displacements, this association was not statistically significant. We found statistically significant associations showing that the antero-posterior length of the condyle at the lateral pole (D1L), the antero-posterior length of the condyle at the medial pole (D1M), and the transverse length of the condyle (D2) were higher among patients without disc displacements when compared to those with unilateral or bilateral displacements. This study showed that disc displacement was associated with smaller condyles in the antero-posterior and transverse dimensions when compared to condyles in subjects with normal disc position.
本研究旨在评估颞下颌关节（TMJ）各组成部分的生物测量参数、关节盘移位与 TMJ 疼痛之间的关系。评估了 185 名患者的磁共振成像（MRI）检查结果（39 名男性和 146 名女性（370 个 TMJ），平均年龄 41.3 岁，范围 18-79 岁）。测量了髁突的前后长度（分为内外侧区域）和横径。测试了髁突线性测量值与盘移位和关节疼痛之间可能存在的关联。尽管报告有疼痛的患者中更常见关节盘移位，但这种关联无统计学意义。我们发现具有统计学意义的关联，表明无盘移位患者的髁突外侧极前后长度（D1L）、髁突内侧极前后长度（D1M）和髁突横径（D2）均高于单侧或双侧盘移位患者。本研究表明，与盘位置正常的髁突相比，盘移位患者的髁突前后径和横径较小。
