Simplified Jaw Functional Limitation Scale for Temporomandibular Disorders: Psychometric Evaluation

• DOI: 10.1111/odi.15253
• Publication Date: 2025-01-10T11:40:08Z
• Authors: Ruonan Sun; Tiqian Liu; Yiwei Liu; Shuyuan Zhang; Yuan Yue; Nan Jiang; Liming Zhang; Xin Xiong
• Keywords: Exploratory factor analysis; Validity

ABSTRACT Objective This study aimed to simplify the Jaw Functional Limitation Scale (JFLS) and evaluate its reliability validity in assessing jaw function patients with temporomandibular disorders (TMD) primary care. Methods TMD non‐TMD participants were assessed using Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Demographic data 8‐item JFLS questionnaire collected quantify functional restriction. Confirmatory factor analysis tested of JFLS‐8 chi‐square, comparative fit index (CFI), root mean square error approximation (RMSEA), residual (RMR). The selected key items from each domain create a 4‐item further testing. Exploratory analysis, reliability, tests conducted. Results Analysis included 671 valid questionnaires (502 patients, 169 participants). exhibited satisfactory among (RMSEA = 0.143, CFI 0.881, RMR 0.567). JFLS‐4 retained high loadings: JFLS1 (0.935), JFLS2 (0.923), JFLS7 (0.766), JFLS5 (0.713). simplified showed good (Cronbach's alpha 0.714) (Kaiser‐Meyer‐Olkin 0.558, Bartlett's test < 0.001) patients. Conclusion A was developed validated, demonstrating mandibular exhibiting potential streamline evaluation processes clinical practice.