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DIFERENCIAS EN EL INDICE DE BOLTON ENTRE LAS MALOCLUSIONES DE CLASE I Y CLASE III

The analysis of Bolton in orthodontics is a element for the diagnosis of the malocclusion. This analysis It has been evaluated in different populations and found its in effectiveness in different malocclusion and racial groups. The aim of our study was to identify alterations of discrepancy of the Bolton index when there are problems in maxilla or mandible between class I and class III malocclusion. Material and methods: the research is descriptive, observational and cross-sectional. We reviewed 1105 models pretreatment orthodontic patients of the Especialidad of Ortodoncia of the Universidad Autonoma de Nayarit. The plaster models that met the inclusion criteria were 546, and were chosen randomly 50 cases class I and 50 class III. The Bolton index was applied getting the discrepancy in millimeters in the 100 models and identified differences in Bolton when there are maxillary or mandibular problems between class I and III malocclusion. Separated into two groups: to (Maxillaris size excess) and B (excess of jaw size), divided in turn into subgroups (ABI y TBI); were compared using the Student's t test. Results:The discrepancy of Bolton index in the maxilla is greater in class III than in patients class I.