Elsayed Ahmad Diab Ahmad, Taema Maram Ahmed, Elkhashab Mohamed Amr, Aziz Essam Adel, Radi Iman Abdel Wahab
Int J Prosthodont. 2024 Sep 27;37(5):495-504. doi: 10.11607/ijp.8716.
To investigate temporomandibular disorder (TMD) prevalence as well as potential TMD risk factors among postgraduate students.
In this cross-sectional and correlation study, 1,255 postgraduate students from different universities were recruited to answer Fonseca's Anamnestic Index (FAI) in addition to collected demographic data and relevant dental history. FAI was used to classify TMD severity. Of the 1,255 participants included, 593 had previous clinical/radiographic TMD reports. Chi-square and Fisher exact tests investigated the relation between each predictor and TMD at P ≤ .05. A logistic binary regression analysis examined the model fit using -2Log likelihood and Pseudo R2 tests at P ≤ .05.
Based on previous clinical/radiographic reports and FAI, 73.4% of the participants had TMDs, of whom 57% had mild dysfunction, followed by moderate (31.7%) and severe (11.3%). There was a statistically significant association between sex, depression, lip/object biting, and clenching with TMDs (P < .001), where women were 2.302 times more likely to develop TMDs than men. The combination of lip biting and clenching in women dramatically increased the risk of TMDs (-2Log Likelihood = 385.7, P < .001 and a Cox and Snell value = 0.315 and a Nagelkerke value = 0.395).
TMDs seem to be highly prevalent among postgraduate students in Egypt, and female postgraduate students who bite their lips or grind their teeth are particularly highly prone to the condition. Object biting and depression could also be considered risk factors.
调查研究生颞下颌关节紊乱病（TMD）的患病率以及潜在的TMD风险因素。
在这项横断面相关性研究中，招募了来自不同大学的1255名研究生，让他们填写丰塞卡记忆指数（FAI），并收集人口统计学数据和相关牙科病史。FAI用于对TMD严重程度进行分类。在纳入的1255名参与者中，593人有既往临床/影像学TMD报告。采用卡方检验和Fisher精确检验，在P≤0.05的水平下研究每个预测因素与TMD之间的关系。采用逻辑二元回归分析，使用-2对数似然比和伪R2检验在P≤0.05的水平下检验模型拟合情况。
根据既往临床/影像学报告和FAI，73.4%的参与者患有TMD，其中57%有轻度功能障碍，其次是中度（31.7%）和重度（11.3%）。性别、抑郁、咬唇/咬物和紧咬牙与TMD之间存在统计学显著关联（P<0.001），女性患TMD的可能性是男性的2.302倍。女性咬唇和紧咬牙的组合显著增加了患TMD的风险（-2对数似然比 = 385.7，P<0.001，Cox和Snell值 = 0.315，Nagelkerke值 = 0.395）。
TMD在埃及研究生中似乎非常普遍，咬唇或磨牙的女研究生尤其容易患此病。咬物和抑郁也可被视为风险因素。
