Cakir, MerveUlker, Gul Merve YalcinErdogan, Ozgur2025-05-312025-05-3120250033-65721936-716310.3290/j.qi.b59382562-s2.0-105001222144https://doi.org/10.3290/j.qi.b5938256https://hdl.handle.net/20.500.14517/7900Objective: This study aimed to evaluate the prevalence of different temporomandibular disorder (TMD) diagnoses according to the Diagnostic Criteria for Temporomandibular Disorders (DC/ TMD) and the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and to compare the diagnoses according to both guidelines. Method and materials: Clinical examinations of 218 patients with TMD complaints were conducted according to both guidelines. Descriptive statistics were performed to analyze the frequency of diagnoses and differences between the guidelines. Results: Most patients diagnosed with TMD were women and middle-aged. The number of patients in the myofascial pain class was significantly lower for the RDC/ TMD classification than for the DC/TMD classification (P = .045). The number of patients in the disc displacement with reduction category was significantly higher for the RDC/TMD classification than for the DC/TMD classification (P < .001). Other categories did not exhibit differences between the classifications. Conclusion: Women and middle-aged individuals are more affected by TMDs. Pain-related TMDs were the most common diagnosis, followed by disc displacement with reduction according to DC/ TMD. According to the RDC/TMD classification, myofascial pain, arthralgia, and disc displacement with reduction were the most commonly observed diagnoses, respectively. Significant differences were observed between the pain-related TMD and disc displacement with reduction groups.eninfo:eu-repo/semantics/closedAccessAxis IDc/TmdRdc/TmdTemporomandibular DisordersTemporomandibular JointArticleQ4Q2563238247WOS:001461205000007