title: [Experience of non-reversible and reversible carious lesions in 11 and 12 years old Mexican schoolchildren: a negative binomial regression analysis].
abstract: BACKGROUND
  Dental caries is one of the most common chronic childhood diseases worldwide. In Mexico it is a public health problem.
  
  
  OBJECTIVE
  To identify variables associated with caries occurrence (non-reversible and reversible lesions) in a sample of Mexican schoolchildren.
  
  
  METHODS
  We performed a cross-sectional study in 640 schoolchildren of 11 and 12 years of age. The dependent variable was the D 1+2 MFT index, comprising reversible and irreversible carious lesions (dental caries) according to the Pitts D 1 /D 2 classification. Clinical examinations were performed by trained and standardized examiners. Using structured questionnaires we collected socio-demographic, socio-economic and health-related oral behaviors. Negative binomial regression was used for the analysis.
  
  
  RESULTS
  The D 1+2 MFT index was 5.68±3.47. The schoolchildren characteristics associated with an increase in the expected average rate of dental caries were: being female (27.1%), having 12 years of age (23.2%), consuming larger amounts of sugar (13.9%), having mediocre (31.3%) and poor/very poor oral hygiene (62.3%). Conversely, when the family owned a car the expected mean D 1+2 MFT decreased 13.5%.
  
  
  CONCLUSIONS
  When dental caries occurrence (about 6 decayed teeth) is estimated taking into consideration not only cavities (lesions in need of restorative dental treatment) but also incipient carious lesions, the character of this disease as a common clinical problem and as a public health problem are further emphasized. Results revealed the need to establish preventive and curative strategies in the sample.
authors.affiliation: Área de Medicina Preventiva, Unidad de Medicina Familiar del ISSSTE, Navolato, Sinaloa, México.
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Villalobos-Rodelo
authors.forename: Carlo E
authors.initials: CE
authors.lastname: Medina-Solís
authors.forename: Lourdes
authors.initials: L
authors.lastname: Verdugo-Barraza
authors.forename: Horacio
authors.initials: H
authors.lastname: Islas-Granillo
authors.forename: Rosa A
authors.initials: RA
authors.lastname: García-Jau
authors.forename: Mauricio
authors.initials: M
authors.lastname: Escoffié-Ramírez
authors.forename: Gerardo
authors.initials: G
authors.lastname: Maupomé
mesh_terms: D002648:Child; D003430:Cross-Sectional Studies; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D019422:Dietary Sucrose; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico / Q000453:epidemiology; D009910:Oral Hygiene; D012044:Regression Analysis; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires
chemical_list: D019422:Dietary Sucrose