title: A population-based study on the impact of orofacial dysfunction on oral health-related quality of life among Brazilian schoolchildren.
abstract: OBJECTIVE
  The aim of the present study was to assess the impact of orofacial dysfunction on oral health-related quality of life (OHRQoL) among Brazilian schoolchildren.
  
  
  METHODS
  A population-based study was conducted with 531 children aged eight to 10 years at schools in the city of Campo Magro, Brazil. The Brazilian version of the Child Perceptions Questionnaire (CPQ8-10) was the outcome variable used to measure the impact on OHRQoL. The main independent variable was orofacial function, which was diagnosed using the Nordic Orofacial Test-Screening (NOT-S). Descriptive, bivariate and multiple Poisson regression analyses were performed using a multilevel approach, with the significance level set to 5%.
  
  
  RESULTS
  The mean (±SD) total CPQ8-10score was 13.95 ± 0.5. The multilevel Poisson regression model revealed that the mean CPQ8-10 score was higher among girls (RR: 1.38, 95% CI: 1.17-1.63; p < 0.001) than boys and that children from families with a higher income had lower CPQ8-10scores (RR: 0.67, 95% CI: 0.51-0.88; p = 0.004) than those from families with a lower income. Children who sought dental care due to pain or factors other than prevention (RR: 1.41; 95% CI: 1.18-1.68), those with orofacial dysfunction (RR: 1.62; 95% CI: 1.30-2.02) and those with a history of traumatic dental injury (RR: 1.39; 95% CI: 1.15-1.69) also experienced a greater impact on OHRQoL.
  
  
  CONCLUSIONS
  Schoolchildren with orofacial dysfunction experience a greater negative impact on OHRQoL.
authors.affiliation: a Department of Stomatology , Federal University of Paraná , Curitiba , Brazil.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Sardenberg
authors.affiliation: a Department of Stomatology , Federal University of Paraná , Curitiba , Brazil.
authors.forename: Bianca Lopes
authors.initials: BL
authors.lastname: Cavalcante-Leão
authors.affiliation: a Department of Stomatology , Federal University of Paraná , Curitiba , Brazil.
authors.forename: Sara Regina Barancelli
authors.initials: SR
authors.lastname: Todero
authors.affiliation: b Department of Pediatric Dentistry and Orthodontics , Federal University of Minas Gerais , Belo Horizonte , Brazil.
authors.forename: Fernanda Morais
authors.initials: FM
authors.lastname: Ferreira
authors.affiliation: a Department of Stomatology , Federal University of Paraná , Curitiba , Brazil.
authors.forename: Nelson Luis Barbosa
authors.initials: NL
authors.lastname: Rebellato
authors.affiliation: a Department of Stomatology , Federal University of Paraná , Curitiba , Brazil.
authors.forename: Fabian Calixto
authors.initials: FC
authors.lastname: Fraiz
mesh_terms: D001938:Brazil; D002648:Child; D003430:Cross-Sectional Studies; D003729:Dental Care / Q000523:psychology; D003731:Dental Caries / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000523:psychology*; D009909:Oral Health / Q000706:statistics & numerical data*; D011788:Quality of Life / Q000523:psychology*; D011795:Surveys and Questionnaires
keywords: Child; Nordic orofacial test screening; oral health-related quality of life; orofacial dysfunction; quality of life