title: [Enamel defects, caries in primary dentition and fluoride sources: relationship with caries in permanent teeth].
abstract: OBJECTIVE
  To examine the relationship between the presence of enamel defects, dental caries in primary teeth, and exposure to various fluoride technologies and the presence of dental caries in permanent teeth in children with mixed dentition.
  
  
  METHODS
  A cross-sectional study was conducted in 713 children aged 6-9 years old in 4 elementary schools in Campeche, Mexico through the use of a questionnaire for the mothers and an oral examination in the children. The dependent variable was the prevalence of caries in permanent dentition.
  
  
  RESULTS
  The mean number of decay, missing or filling teeth in primary dentition (dmft) and in permanent dentition (DMFT) was 2.48 (2.82) (deft > 0 = 58.9%) and 0.40 (0.98) (DMFT > 0 = 18.2%), respectively. The significant caries index (SiC), which is calculated in deciduous dentition, was 5.85 for 6 year-olds. Multivariate logistic regression adjusted for variables related to fluoride exposure revealed that older age (OR = 2.99), a deft of > 0 (OR = 5.46), and lower maternal educational level (OR = 1.57) were significantly associated with a higher number of dental caries in permanent teeth. An interaction between sex and enamel defects was also found.
  
  
  CONCLUSIONS
  The number of dental caries in both primary and permanent dentitions was relatively smaller than that found in prior studies performed in Mexican populations. The results confirm that the presence of caries in primary dentition is strongly associated with caries in permanent dentition. No significant relationship was found between fluoride exposure and dental caries in permanent dentition.
authors.affiliation: Facultad de Odontología de la Universidad Autónoma de Campeche, Campeche, México.
authors.forename: Ana Alicia
authors.initials: AA
authors.lastname: Vallejos-Sánchez
authors.forename: Carlo Eduardo
authors.initials: CE
authors.lastname: Medina-Solís
authors.forename: Juan Fernando
authors.initials: JF
authors.lastname: Casanova-Rosado
authors.forename: Gerardo
authors.initials: G
authors.lastname: Maupomé
authors.forename: Alejandro José
authors.initials: AJ
authors.lastname: Casanova-Rosado
authors.forename: Mirna
authors.initials: M
authors.lastname: Minaya-Sánchez
mesh_terms: D000367:Age Factors; D002648:Child; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D003743:Dental Enamel / Q000002:abnormalities*; D019229:Dentition, Permanent; D005260:Female; D005457:Fluoridation; D006801:Humans; D016015:Logistic Models; D008297:Male; D008800:Mexico / Q000453:epidemiology; D015999:Multivariate Analysis; D015995:Prevalence; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014094:Tooth, Deciduous