Ozturk Mehmet, Erdur Emire Aybüke, Dağ Nurullah, Erdur Ömer
Department of Radiology, Division of Pediatric Radiology, Selcuk University Faculty of Medicine, Konya, Turkey.
Department of Orthodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2022 Oct;134(4):492-499. doi: 10.1016/j.oooo.2022.06.008. Epub 2022 Jun 26.
The objectives of this study were to quantitatively measure temporomandibular joint (TMJ) disk stiffness in adolescents with bruxism using shear wave elastography (SWE) and to examine the relationship between elastography values, patient age, and duration of bruxism.
This prospective study evaluated 120 TMJ disks of 60 adolescents (30 patients with bruxism and 30 controls). The stiffness of the anterior, intermediate, and posterior parts of the disk was measured. The patient and control groups' respective quantitative SWE values of elasticity (kilopascals [kPa]) and velocity (meters/second [m/s]) were compared.
The elasticity and velocity values of the anterior and intermediate parts were significantly higher in the patients than in the controls (P ≤ .013), with no significant difference in the size of the joint space (P = .886). A receiver operating characteristic analysis resulted in sensitivity for the anterior part of 0.80 for kPa and 0.83 for m/s, with specificity of 0.57 (kPa) and 0.60 (m/s). For the intermediate part, the sensitivity was 0.80 for kPa and 0.86 for m/s, with specificity of 0.64 (kPa) and 0.57 (m/s). No correlations were found between the SWE values and patient age (P ≥ .098) or duration of bruxism (P ≥ .134).
SWE may be useful in the evaluation of TMJ disk stiffness in patients with bruxism.
本研究的目的是使用剪切波弹性成像（SWE）定量测量磨牙症青少年的颞下颌关节（TMJ）盘刚度，并研究弹性成像值、患者年龄和磨牙症持续时间之间的关系。
这项前瞻性研究评估了60名青少年（30名磨牙症患者和30名对照）的120个TMJ盘。测量了盘的前部、中部和后部的刚度。比较了患者组和对照组各自的弹性定量SWE值（千帕[kPa]）和速度（米/秒[m/s]）。
患者的前部和中部的弹性和速度值显著高于对照组（P≤0.013），关节间隙大小无显著差异（P = 0.886）。受试者工作特征分析得出，前部kPa的敏感度为0.80，m/s为0.83，特异度为0.57（kPa）和0.60（m/s）。对于中部，kPa的敏感度为0.80，m/s为0.86，特异度为0.64（kPa）和0.57（m/s）。未发现SWE值与患者年龄（P≥0.098）或磨牙症持续时间（P≥0.134）之间存在相关性。
SWE可能有助于评估磨牙症患者的TMJ盘刚度。
