Choudhary Anuridhi, Ahuja Upasana Sethi, Rathore Akshay, Puri Nidhi, Dhillon Manu, Budakoti Akansha
Department of Oral Medicine and Radiology, I.T.S . Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh, India.
Dent Res J (Isfahan). 2020 Sep 7;17(5):338-346. eCollection 2020 Sep-Oct.
The etiology of temporomandibular disorders (TMDs) is complex and associated with multiple predisposing and initiating factors. Articular eminence morphology and steep eminence inclination have been postulated as the etiological factors, but there has been no clear evidence of association of morphology of the temporomandibular joints (TMJ) complex as a probable predisposing factor in the pathogenesis of TMDs.
This was a cross-sectional, case-control study, and cone-beam computed tomography scans, and the evaluation was performed for 60 joints in 30 patients with symptomatic TMDs and for 40 healthy joints of 20 age-matched patients. One-way ANOVA, post hoc, unpaired -test, Chi-square, and intra-class correlation coefficient test were used to determine the correlation between the TMJ articular eminence inclination, height, condylar bone changes, condyle, and fossa shapes with symptomatic TMDs. The < 0.05 were considered statistically significant.
There was a statistically significant difference of articular eminence inclination and height with a steeper eminence inclination in the control group ( = 0.044*, and 0.035*). The condylar bone changes were found to be significantly more in the TMJ disorder group ( = 0.001*). There was no significant association of condyle and fossa shapes ( = 0.482 and 0.689) and of articular eminence inclination and height with condylar bone changes ( = 0.695, 0.498, 0.192, and 0.823) and condyle shapes ( = 0.389, 0.521, 0.260, and 0.387). The eminence inclination was not associated with fossa shapes ( = 0.471 and 0.086), but eminence height was associated with fossa shapes in the TMJ disorder group ( = 0.043* and 0.111).
The results depicted that there was no significant association between TMJ complex anatomy and TMJ disorders in the present study population.
颞下颌关节紊乱病（TMDs）的病因复杂，与多种易感因素和诱发因素相关。关节结节形态和陡峭的结节倾斜度被认为是病因，但尚无明确证据表明颞下颌关节（TMJ）复合体形态作为TMDs发病机制中可能的易感因素之间存在关联。
这是一项横断面病例对照研究，采用锥形束计算机断层扫描，对30例有症状TMDs患者的60个关节和20例年龄匹配的健康对照者的40个关节进行评估。采用单因素方差分析、事后检验、非配对t检验、卡方检验和组内相关系数检验来确定TMJ关节结节倾斜度、高度、髁突骨变化、髁突和关节窝形状与有症状TMDs之间的相关性。P<0.05被认为具有统计学意义。
对照组关节结节倾斜度和高度存在统计学显著差异，结节倾斜度更陡峭（P = 0.044*，P = 0.035*）。发现TMJ紊乱组的髁突骨变化明显更多（P = 0.001*）。髁突和关节窝形状（P = 0.482和P = 0.689）以及关节结节倾斜度和高度与髁突骨变化（P = 0.695、P = 0.498、P = 0.192和P = 0.823）和髁突形状（P = 0.389、P = 0.521、P = 0.260和P = 0.387）之间无显著关联。结节倾斜度与关节窝形状无关（P = 0.471和P = 0.086），但在TMJ紊乱组中结节高度与关节窝形状有关（P = 0.043*和P = 0.111）。
结果表明，在本研究人群中，TMJ复合体解剖结构与TMJ紊乱之间无显著关联。
