title: Prevalence and associated factors of traumatic dental injuries in Brazilian schoolchildren.
abstract: OBJECTIVE
  This study investigated the prevalence of traumatic dental injury (TDI) and associated factors in the permanent incisors of Brazilian schoolchildren.
  
  
  METHODS
  A cross-sectional survey was carried out with 1,612 male and female children aged 11 to 14 attending public and private elementary schools in Belo Horizonte, Brazil. A multistage sampling technique was adopted to select the children. Oral examinations were performed by calibrated examiners for the diagnosis of TDI (criteria proposed by Andreasen) and dental caries [Decayed, Missing and Filled Teeth Index (DMFT)]. The Social Vulnerability Index was used for socioeconomic classification. Data analysis involved descriptive statistics and the Poisson regression model.
  
  
  RESULTS
  The prevalence of TDI was 17.1%. Falls (43.6%) were the most common cause of TDI, mainly at home (41.8%). Boys were more affected than girls. There was no statistically significant association between TDI and socioeconomic status. The adjusted results revealed that TDI was significantly associated with DMFT [1.11, 95% confidence interval (CI): 1.06 to 1.16] and overjet (1.15, 95% CI: 1.00 to 1.31).
  
  
  CONCLUSIONS
  TDI was associated with dental caries and overjet and was not influenced by socioeconomic status.
authors.affiliation: Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil. crysbendo@yahoo.com.br
authors.forename: Cristiane B
authors.initials: CB
authors.lastname: Bendo
authors.forename: Saul M
authors.initials: SM
authors.lastname: Paiva
authors.forename: Ana C
authors.initials: AC
authors.lastname: Oliveira
authors.forename: Daniela
authors.initials: D
authors.lastname: Goursand
authors.forename: Cíntia S
authors.initials: CS
authors.lastname: Torres
authors.forename: Isabela A
authors.initials: IA
authors.lastname: Pordeus
authors.forename: Miriam P
authors.initials: MP
authors.lastname: Vale
mesh_terms: D000058:Accidental Falls / Q000706:statistics & numerical data; D000293:Adolescent; D001265:Athletic Injuries / Q000453:epidemiology; D001938:Brazil / Q000453:epidemiology; D002648:Child; D003430:Cross-Sectional Studies; D004245:DMF Index; D003731:Dental Caries / Q000150:complications / Q000453:epidemiology; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008297:Male; D057887:Overbite / Q000150:complications / Q000453:epidemiology; D015995:Prevalence; D012044:Regression Analysis; D012744:Sex Ratio; D012923:Social Class; D018677:Tooth Injuries / Q000150:complications / Q000453:epidemiology*; D035862:Vulnerable Populations