title: Orthodontic treatment and its impact on oral health-related quality of life in Brazilian adolescents.
abstract: OBJECTIVE
  To assess whether Brazilian adolescents who had completed orthodontic treatment had lower levels of impacts on their oral health-related quality of life.
  
  
  METHODS
  A cross-sectional study.
  
  
  METHODS
  The study was conducted in public and private secondary schools in Bauru-SP, Brazil.
  
  
  METHODS
  1675 randomly selected adolescents aged between 15 and 16 years.
  
  
  METHODS
  Adolescents were clinically examined using the Index of Orthodontic Treatment Need (IOTN). Two oral health-related quality of life measures, namely the Oral Impacts on Daily Performance (OIDP) and the shortened version of the Oral Health Impacts Profile (OHIP-14) were used to assess adolescents' oral health-related impacts. Multiple logistic regression was used in the data analysis.
  
  
  RESULTS
  A response rate of 100% was obtained. Adolescents who had completed orthodontic treatment had fewer oral health-related impacts compared to the other two groups. They were 1.85 times (95% CI 1.30 to 2.62) less likely to have an oral health impact on their daily life activities than adolescents currently under treatment or 1.43 (1.01 to 2.02) times than those who never had treatment.
  
  
  CONCLUSIONS
  Adolescents who had completed orthodontic treatment had a better oral health-related quality of life than those currently under treatment or those who never had treatment.
authors.affiliation: Department of Epidemiology and Public Health, Royal Free and University College Medical School, London, UK. cmdeoliviera@hotmail.com
authors.forename: C M
authors.initials: CM
authors.lastname: de Oliveira
authors.forename: A
authors.initials: A
authors.lastname: Sheiham
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D001938:Brazil; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008310:Malocclusion / Q000523:psychology / Q000628:therapy; D020380:Needs Assessment; D009909:Oral Health; D009971:Orthodontics, Corrective / Q000523:psychology*; D017060:Patient Satisfaction; D011788:Quality of Life; D015203:Reproducibility of Results; D012737:Sex Factors; D012923:Social Class; D014504:Urban Health