
The study aimed to explore the dimensionality of three biopsychosocial constructs with multiple subdimensions, including the Symptom Checklist‐90‐Revised (SCL‐90R), catastrophizing pain scale (PCS) and Pittsburgh Sleep Quality Index (PSQI), and to identify the latent dimensions of five biopsychosocial constructs (SCL‐90R, PCS, PSQI, pain severity, and pain interference) using the principal component analysis (PCA) in patients with temporomandibular disorder (TMD). The findings of this study revealed that five measures could be primarily categorized into two latent constructs of the psychological (affective) and pain‐related (sensory‐cognitive) dimensions. These core components could be applied in clinical settings and for research purposes.
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