title: Interproximal contact points and proximal caries in posterior primary teeth.
abstract: OBJECTIVE
  The purpose of this study was to investigate the hypothesis that the risk of proximal caries in posterior primary teeth is higher when interproximal contact points are closed than when they are open.
  
  
  METHODS
  A cross-sectional study design was used with a sample of 286 children aged 24 to 72 months (mean age 54 months +/- 16 months). Children with any permanent dentition were excluded. Caries (defined as a lesion halfway through enamel or further) was assessed radiographically by a single dentist. The open/closed nature of contact points was assessed by a different dentist through resistance to dental floss. Data concerning known risk factors and indicators for caries were also collected. Analyses were performed at the level of the contact point, comparing the same contact points in different children. Multiple logistic regression was used to asses the relationship between open/closed status and caries status for each posterior contact point.
  
  
  RESULTS
  In 7 of the 8 contact points examined, the odds for caries were significantly increased when contact points were dosed.
  
  
  CONCLUSIONS
  This research suggests that the risk for proximal caries in the posterior primary dentition is raised if contact points are dosed compared to those that are open.
mesh_terms: D001903:Bottle Feeding; D002327:Cariostatic Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003481:Cuspid / Q000000981:diagnostic imaging / Q000473:pathology; D004245:DMF Index; D003731:Dental Caries / Q000209:etiology*; D003733:Dental Caries Susceptibility; D003743:Dental Enamel / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D005459:Fluorides / Q000627:therapeutic use; D006801:Humans; D016015:Logistic Models; D008297:Male; D008963:Molar / Q000000981:diagnostic imaging / Q000473:pathology; D016017:Odds Ratio; D011859:Radiography; D012307:Risk Factors; D019228:Tooth Crown / Q000000981:diagnostic imaging / Q000473:pathology*; D014078:Tooth Eruption; D014094:Tooth, Deciduous / Q000000981:diagnostic imaging / Q000473:pathology*; D014099:Toothbrushing
chemical_list: D002327:Cariostatic Agents; D005459:Fluorides