Associação entre DTM e má oclusão: uma abordagem funcional, dento alveolar e esquelética

Abstract

The aim of this study was to investigate the association between temporomandibular disorders (TMD) and occlusal factors, which included the variables from functional, dental and skeletal occlusion. The sample consisted of 60 volunteer patients, aged upper 18 years, who were undergoing orthodontic treatment in Faculty of Medical and Health Sciences of Juiz de Fora. It was initially made, a diagnosis of DTM through the RDC axis I for all patients. Subsequently, were assessed the variables from functional occlusion (canine and protrusive guidance and discrepancy between RC and MIH), dental occlusion (score by PAR index and assessment of overjet, overbite, crowding, cross bite and open bite) and skeletal occlusion (Class I, II or III). All assessments were performed by a single examiner. Data were compiled and analyzed statistically using the program spss 13.0. at a level of significance of 5%. Patients diagnosed with TMD had higher index scores PAR. The variables of dental occlusion, overjet and overbite over 4mm, shown to have an association with the development of temporomandibular disorders. Individuals rated Class II and III demonstrated a higher prevalence of TMD. The results confirm that some occlusal factors can be considered a rich potential for the development of temporomandibular disorders. However, the analyzed sample is restricted, and some occlusal variables showed low prevalence in individuals, making difficult the possibility of a correlation with the presence of TMD.