Resumo

MASSUIA, Juliana Mariano  e  CARVALHO, Wladithe Organ. Prevalence and associated factors of malocclusion in the primary dentition. RGO, Rev. gaúch. odontol. (Online) [online]. 2012, vol.60, n.3, pp. 329-335. ISSN 1981-8637.

Objective To estimate the prevalence and factors associated with malocclusion in primary dentition. Methods A cross-sectional study consisting of all children living in areas covered by the Family Health Units in the municipality of Pedra Preta - Mato Grosso. Data collection consisted of two steps: an interview with the mother and / or guardian and the child's clinical dental examination. The interviews were conducted by two previously trained assistants and clinical examination by a dentist previously trained and calibrated (intrarater kappa = 0.96). A total of 374 children aged three to five years were examined. Criteria for classifying normal occlusions and malocclusions were: terminal relationship primary second molars, canine relationship, transverse relationship, goodwill and presence / absence of crowding. Results Was used the Poisson regression. The prevalence of malocclusion was 53.2% (95% CI: 48.3, 58.6). An association of malocclusion with the following variables: presence of oral habits, exclusive breastfeeding ≤ 3 months, facial profile of the type / concave and convex arc-shaped jaw V. Conclusion The prevalence of malocclusion in primary dentition was high, however some are associated with avoidable factors: early diagnosis and preventative measures can prevent and / or intercept the establishment of these changes, even in the primary dentition.

Palavras-chave : Breast feeding.; Dentition primary.; Habits.; Malocclusion..