Oral behaviors and anxiety are significant predictors of jaw function limitation in patients with anterior disc displacement without reduction

• Published in: Archives of oral biology 2024-10, Vol.166, p.106033, Article 106033
• Main Authors: Fang, Zhong-yi, Yang, Yang, Yao, Yuan, Liu, Sha-sha, Liu, Li-kun, Lu, Shen-ji, Zeng, Hong, Cai, Bin, Xu, Li-li
• Format: Article
• Language: English
• Subjects: Adult; Anxiety; Anxiety - physiopathology; Behavioral risk factor; Biopsychosocial model; Cross-Sectional Studies; Female; Humans; Joint Dislocations - physiopathology; Male; Mastication - physiology; Middle Aged; Range of Motion, Articular - physiology; Recovery of function; Risk Factors; Sex; Sex Factors; Temporomandibular Joint Disc - physiopathology; Temporomandibular joint disorders; Temporomandibular Joint Disorders - physiopathology; Temporomandibular Joint Disorders - psychology
• ISSN: 0003-9969; 1879-1506; 1879-1506
• DOI: 10.1016/j.archoralbio.2024.106033

We aimed to describe jaw function characteristics in patients with anterior disc displacement without reduction (ADDWoR) using the jaw function limitation scale (JFLS), and to investigate the effects of biopsychosocial risk factors on limited jaw function. In this cross-sectional study of 636 patients with ADDWoR (females, 568; males, 68), we used the JFLS to assess jaw function. Behavioral, psychological, sociodemographic, and biomedical data were collected. Multivariate logistic regression analysis was used to determine risk factors affecting limited jaw function. A receiver operating characteristic curve was used to evaluate the predictive effect of these risk factors. ADDWoR-associated limitations included restricted jaw mobility and mastication, which exceeded median global functional limitations scale scores, especially mouth opening to bite an apple and chewing tough food. Females had greater limitations in jaw mobility, verbal and emotional communication, and overall. Multivariate logistic regression analysis findings indicated that oral behaviors, anxiety, sex, pain intensity, and maximal mouth opening (MMO) were predictive of limited jaw function (area under the curve, 72 %). Patients with ADDWoR reported mastication and jaw mobility restrictions, with females having more pronounced limitations, and specific risk factors identified as significant predictors of jaw function limitations. Along with pain relief and improvement in MMO, appropriate psychological counseling and oral behavioral correction facilitates recovery of jaw function in such patients. •Patients with ADDWoR have restrictions in jaw mobility and mastication.•Jaw mobility, verbal and emotional communication, and global are more limited in women.•Oral behaviors, anxiety, sex, pain, and MMO predict jaw function limitations.•Psychological counseling and oral behavioral correction may also be required.