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Correlation of patients' demographics and clinical symptoms with temporomandibular disorders.

Objective: To investigate the correlation between basic characteristics and clinical features of patients with temporomandibular disorders (TMD). Methods: The R language statistical tool was used to analyze the clinical information of 500 TMD patients, i.e., age, sex, joint noises, mouth opening pattern, and pain symptoms, as well as the results of the mandibular push-back test. A pairwise correlation analysis of each clinical feature was carried out. Results: The highest incidence of TMD was observed in the age group of 20 to 30 years (240/500). Around 2/3 of the patients showed pain symptoms. Abnormal mouth opening patterns, joint noises, and temporomandibular joint synovitis (TMJS) were observed in 48.4, 65.4, and 34% of patients, respectively. Conclusion: Joint click and the corrected deviation of the mouth opening pattern are signs of early-stage TMD, whereas limited mouth opening and TMJS are indicators of progressive stage and complicated TMD.