Abstract AIM: The aim of the present study was to evaluate the prevalence of the different Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis I types of temporomandibular disorders (TMD) in a population of subjects seeking for TMD treatment at 2 University Departments in Italy and to compare it with data from similar studies in the literature, in order to assess the usefulness of the RDC/TMD classification system as a tool for epidemiological data gathering and multicenter and cross-cultural comparison. METHODS: A total of 210 consecutive patients seeking for TMD treatment at the Section of Prosthetic Dentistry, Department of Neuroscience, University of Pisa, Italy, and 109 consecutive patients seeking treatment at the Section of Prosthetic Dentistry and Temporo-mandibular Disorders, University of Pavia, Italy, were assessed using RDC/TMD. RESULTS: Only 181 of the patients referring to the University of Pisa and 104 of those referring to the University of Pavia satisfied the criteria for inclusion. Findings from the 2 study populations were very similar. Mean age of the patients was 40 years, with a female:male ratio of 3.5:1 (222 females, 77.9%; 63 males, 22.1%). The prevalence of RDC/TMD Axis I diagnoses was 50.2% (143/285) for Group I disorders (muscle disorders), 38.6% (110/285) for Group II disorders (disc displacement), and 50.2% (143/285) for Group III disorders (arthralgia, osteoarthritis, osteoarthrosis). CONCLUSION: Results from the present investigation have confirmed the usefulness of the RDC/TMD classification system for research purposes and for data gathering in cross-cultural and multicenter comparisons.
Diagnosis of temporomandibular disorders according to RDC/TMD axis I findings, a multicenter Italian study / Manfredini, D; Segu', M; Bertacci, A; Binotti, C; Bosco, M. - In: MINERVA STOMATOLOGICA. - ISSN 0026-4970. - 53:7-8(2004), pp. 429-438.
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