The prevalence of malocclusion is higher in schoolchildren w
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Malocclusion prevalence was higher in children who used a pacifier for 4 years and in children classified as mouth breathers. Malocclusion prevalence was 42% higher in children with signs of hyperactivity. The prevalence in these children was independent of age, pacifier use, mouth breathing.

Attention deficit-hyperactivity disorder is a behavioral disorder characterized by a lack of focus, impulsive behavior, and or excessive activity. This research aimed to evaluate the association between signs of attention deficit-hyperactivity disorder and malocclusion in schoolchildren.

A cross-sectional study was conducted with a representative sample of 633 children aged 7-12 years. The children were clinically examined for malocclusion using the Dental Aesthetic Index. The predominant breathing pattern was also determined. Parents answered a questionnaire addressing socioeconomic characteristics and the presence of nonnutritive sucking habits. The Swanson, Nolan, and Pelham Scale-IV was filled out by both parents and teachers to compare behavioral patterns. The children were submitted to a neuropsychological evaluation using the Raven's Colored Progressive Matrix Test.

--The prevalence of malocclusion was 42% higher among children with signs of hyperactivity reported by both parents and teachers.

--In the final Poisson regression model, the prevalence of malocclusion was lower among schoolchildren aged 11 and 12 years and higher among those who used a pacifier for at least 4 years as well as those classified as mouth breathers.

Conclusively, the prevalence of malocclusion was higher among children with signs of hyperactivity independently of age, pacifier use, and mouth breathing.

American Journal of Orthodontics and Dentofacial Orthopedics
Source: https://doi.org/10.1016/j.ajodo.2019.11.027
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