Prevalencia de maloclusiones y necesidad de tratamiento ortodóncico (iotn), en escolares con dentición mixta del distrito de Ate Vitarte en el año 2015

Abstract

Objective: To determine the prevalence of malocclusions and orthodontic treatment need using the Index of Orthodontic Treatment Need (IOTN) in schoolchildren with mixed dentition from a Public School in Ate Vitarte, Peru. Materials and Methods: 252 schoolchildren aged between 9-12 years (both genders) with mixed dentition were including. Children with physical or mental disabilities, active or previous orthodontic treatment and no collaborators were excluded. Fisher´s exact test was used to associate malocclusion with the Dental Health Component, Dental Health and Aesthetic Component with age and gender. Results: According to the Index of Orthodontic Treatment Need modified, the prevalence with the Dental Health Component for grades 4-5 was 25.4% and with the Aesthetic Component for grades 8-10 was 5.6%. No statistically significant differences (p = 0.247, p = 0.056, p = 0.271 and p = 0.942) were presented to the prevalence of Orthodontic Treatment Need for Aesthetic and Dental Health Components by gender and age. Statistically Significant difference (p = 0.000) was found between the prevalence of malocclusions and orthodontic treatment need. Conclusions: The prevalence of malocclusions and orthodontic treatment need in class I was 13.9%, class II-1 of 7.9%, class II-2 and class III 1.2% 2.4% 6. Index of Orthodontic Treatment Need showed strong association with each class of malocclusion.