title: Dental caries and ear infections in preschool-aged children.
abstract: OBJECTIVE
  The purpose of this case-control study was to assess the association between ear infection and dental caries.
  
  
  METHODS
  The sample consisted of 126 children (range: two to five years) with no major medical problems or craniofacial anomalies. Ear infection history, demographic, dental, health and diet history of each child was determined using a questionnaire administered to the parent/guardian of the child. Dental charts were used to abstract dmft (decayed, missing and filled teeth) scores for children with dental caries (DC: dmft > or = 1) and without caries (NDC: dmft = 0), and oral hygiene index (OHI) scores.
  
  
  RESULTS
  Chi-square analysis indicated no differences in ear infection history between the 71 DC and 55 NDC (past year: 35% vs. 40%; lifetime: 30% vs. 31%) children. However, there was a trend (p = 0.07) for the mean number of ear infections to be higher in DC versus the NDC group. Baby bottle use was highest among those who had both ear infection and caries. Multivariate regression model revealed that OHI scores, reason for dental visit, and frequency of visits were the best predictors of dmft scores.
  
  
  CONCLUSIONS
  An association between dental caries and ear infection was not observed in this sample. Future investigations should explore common risk factors in increasing the risk of both diseases simultaneously.
authors.affiliation: Department of Community Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, Ohio 44106-4905, USA. sxn15@case.edu
authors.forename: Suchitra
authors.initials: S
authors.lastname: Nelson
authors.forename: Natalie
authors.initials: N
authors.lastname: Nechvatal
authors.forename: Jill
authors.initials: J
authors.lastname: Weber
authors.forename: Seth
authors.initials: S
authors.lastname: Canion
mesh_terms: D016022:Case-Control Studies; D002675:Child, Preschool; D003731:Dental Caries / Q000150:complications*; D004812:Epidemiologic Methods; D006801:Humans; D010033:Otitis Media / Q000150:complications*; D012959:Socioeconomic Factors