[Prevalence of malocclusion and its association with functional alterations of the stomatognathic system in schoolchildren].

The aim of this research was to estimate the prevalence of malocclusion among 12-year-old schoolchildren in Camaragibe, Pernambuco State, Brazil. Malocclusions were stratified by the degree of severity, and their association with alterations of the following functions was also analyzed: speech articulation, respiration, and deglutition. Occlusion was assessed by means of the Treatment Priority Index (TPI) and the functions referred to by means of the criteria used in routine clinical speech therapy by a single calibrated examiner (kappa values ranging from 0.