Liu J K, Tsai M Y
Department of Dentistry, National Cheng Kung University Hospital, Tainan, Taiwan, R.O.C.
Funct Orthod. 1996 Nov-Dec;13(5):9-12.
Orthodontic treatment is considered one of the risk factors for temporomandibular disorders (TMD). However, TMD may occur before orthodontic treatment. The purpose of this study was to investigate the prevalence of TMD in orthodontic patients prior to treatment. The samples consisted of 508 patients (214 males and 294 females) at the National Cheng Kung University Hospital (NCKUH) in southern Taiwan. Ages ranged from 6 to 56 years. TMD signs were recorded by clinical examination prior to treatment. The overall prevalence of TMD was 26.6%. The prevalence was slightly higher in females (27.2%) than males (24.8%). However, the difference was not statistically significant. The prevalence of TMD in children (ages 6-17) and adults (ages 18-56) was 16.5% and 43.6%, respectively. The difference was statistically significant. Distribution of TMD signs was joint sounds (32.3%), muscle or joint pains (32.3%), muscle or joint pains (32.3%), mouth opening less than 35 mm (18%), combination of two signs (16.5%) and combination of three signs (0.8%).
正畸治疗被认为是颞下颌关节紊乱病（TMD）的危险因素之一。然而，TMD可能在正畸治疗之前就已出现。本研究的目的是调查正畸患者治疗前TMD的患病率。样本包括台湾南部国立成功大学医院（NCKUH）的508名患者（214名男性和294名女性）。年龄范围为6至56岁。在治疗前通过临床检查记录TMD体征。TMD的总体患病率为26.6%。女性患病率（27.2%）略高于男性（24.8%）。然而，差异无统计学意义。儿童（6至17岁）和成人（18至56岁）中TMD的患病率分别为16.5%和43.6%。差异有统计学意义。TMD体征的分布为关节弹响（32.3%）、肌肉或关节疼痛（32.3%）、开口度小于35毫米（18%）、两种体征组合（16.5%）和三种体征组合（0.8%）。
