title: [Dental caries prevalence survey in children and teenagers].
abstract: OBJECTIVE
  To identify the prevalence of caries in affiliated children and teenagers at Instituto Mexicano del Seguro Social (IMSS).
  
  
  METHODS
  The survey was carried out according to the World Health Organization indexes. The studied was carried out in 1545 boys and girls aged three, five, six, and twelve years and selected by stratified random sampling in seven places of Mexican Republic (Guanajuato, East and West Estado de México, Northwest 1, Northeast 2, Southwest 3, and Southeast 4 DF).
  
  
  RESULTS
  The prevalence of caries was 66.9 %. Rates were higher in temporary dentition than in permanent teeth (p < 3.07). The mean of caries index per tooth in primary dentition in children of six years of age was 3.57 +/- 2.8. In the 12 years of age group the average per tooth was 1.97 +/- 1.4. The main component in both primary and permanent dentition was caries with 2.49 and 1.56 respectively.
  
  
  CONCLUSIONS
  The results of this survey showed slight changes in prevalence and high levels of caries in children.
authors.affiliation: Coordinación de Programas Integrados de Salud, Instituto Mexicano del Seguro Social, Distrito Federal, México. jesus.perezd@imss.gob.mx
authors.forename: Jesús
authors.initials: J
authors.lastname: Pérez-Domínguez
authors.forename: Armando
authors.initials: A
authors.lastname: González-García
authors.forename: María
authors.initials: M
authors.lastname: del Rosario Niebla-Fuentes
authors.forename: Iván
authors.initials: I
authors.lastname: de Jesús Ascencio-Montiel
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003731:Dental Caries / Q000453:epidemiology*; D003753:Dental Health Surveys; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D011446:Prospective Studies