title: Socioeconomic inequalities in the distribution of dental caries in Brazilian preschool children.
abstract: OBJECTIVE
  This study assessed the inequality in caries distribution and the association between socioeconomic indicators and caries experience of preschool children in a city in Brazil.
  
  
  METHODS
  A cross-sectional study in a multistage random sample of 455, 1-5-year-old children was conducted on National Children's Vaccination Day in Santa Maria, Brazil. Calibrated examiners evaluated the prevalence of dental caries and parents provided information about several socioeconomic indicators by means of a semistructured questionnaire. Data were analyzed using Poisson regression model.
  
  
  RESULTS
  The caries prevalence was 23.5 percent and the means for the decayed, missing and filled primary teeth was 0.8. A high inequality in the caries distribution with Gini coefficient of 0.8 and Significant Caries Index of 2.8 was observed. The oldest children, non-white, with mothers having low level of education and from low household income had the highest prevalence of dental caries.
  
  
  CONCLUSIONS
  Socioeconomic factors are strong predictors for the inequality in caries distribution in Brazilian preschool children.
authors.affiliation: Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Rua Acampamento 239/01, Santa Maria, RS 97.050-000, Brazil. chaia-piovesan@bol.com.br
authors.forename: Chaiana
authors.initials: C
authors.lastname: Piovesan
authors.forename: Fausto M
authors.initials: FM
authors.lastname: Mendes
authors.forename: Fabiana V
authors.initials: FV
authors.lastname: Ferreira
authors.forename: Renata S
authors.initials: RS
authors.lastname: Guedes
authors.forename: Thiago M
authors.initials: TM
authors.lastname: Ardenghi
mesh_terms: D000367:Age Factors; D002675:Child, Preschool; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D005006:Ethnicity; D005260:Female; D054624:Health Status Disparities; D006801:Humans; D007223:Infant; D008297:Male; D015588:Observer Variation; D015995:Prevalence; D012044:Regression Analysis; D018401:Sample Size; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014505:Urban Population