Díaz Dora Zulema R, Müller Cristina Emöke E, Gavião Maria Beatriz D
Department of Morphology, Piracicaba Dental School, University of Campinas.
Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas.
J Oral Sci. 2019 Nov 27;61(4):539-543. doi: 10.2334/josnusd.18-0278. Epub 2019 Oct 5.
The present study's aim was to compare temporomandibular joint (TMJ) images for individuals with and without temporomandibular disorder (TMD) using high-resolution ultrasonography (HRUS). The distance between the lateral-most point of the articular capsule and the lateral-most point of the mandibular condyle (lateral capsule-mandibular condyle distance) was determined to confirm the clinical diagnosis according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). The sample group comprised 17 women and 15 men, aged 19-39 years, distributed into TMD (n = 20) and Asymptomatic (n = 12) groups. The evaluations were in closed- and open-mouth positions. The lateral capsule-mandibular condyle distance was measured in both positions. The articular surface of the condyle and the articular capsule were visualized as hyperechoic structures, and the articular disk was visualized as a central, hyperechogenic area surrounded by a hypoechoic linear image. Morphological changes were observed in some TMD group participants, including joint effusion (hypoechogenic area), condylar erosions (increased hyperechoic area), and condylar surface irregularities. The lateral capsule-mandibular condyle distance did not differ between sides or groups among participants with intra-articular disorders with or without pain (P > 0.05). In conclusion, HRUS allowed visualization of the TMJ structures, but did not allow confirmation of clinical diagnosis by DC/TMD.
本研究的目的是使用高分辨率超声检查（HRUS）比较患有和未患有颞下颌关节紊乱病（TMD）的个体的颞下颌关节（TMJ）图像。根据颞下颌关节紊乱病诊断标准（DC/TMD），确定关节囊最外侧点与下颌髁突最外侧点之间的距离（外侧关节囊-下颌髁突距离），以辅助临床诊断。样本组包括17名女性和15名男性，年龄在19至39岁之间，分为TMD组（n = 20）和无症状组（n = 12）。评估在闭口位和开口位进行。在两个位置均测量外侧关节囊-下颌髁突距离。髁突的关节面和关节囊显示为高回声结构，关节盘显示为中央高回声区，周围环绕低回声线性图像。在一些TMD组参与者中观察到形态学变化，包括关节积液（低回声区）、髁突侵蚀（高回声区增加）和髁突表面不规则。在有或无疼痛的关节内疾病参与者中，两侧或组间的外侧关节囊-下颌髁突距离无差异（P > 0.05）。总之，HRUS能够显示TMJ结构，但不能根据DC/TMD确诊临床疾病。
