title: Comparison of caries epidemiology of the primary teeth in 3- to 6-year-old children from Plovdiv and Karlovo/Sopot.
abstract: BACKGROUND
  Dental caries is affected by multiple factors, including socioeconomic conditions and the presence or absence of anticaries prevention programs.
  
  
  OBJECTIVE
  The aim of the present study was to conduct comparative study of caries epidemiology of the primary teeth in 3- to 6-year-old children from Plovdiv and Karlovo/Sopot.
  
  
  METHODS
  The study includes 1250 children from 3 to 6 years of age--830 from Plovdiv and 420 from Karlovo/Sopot, from randomly selected kindergartens. The following indicators were determined: prevalence of caries per persons (Ep); prevalence of caries per teeth (Et); incidence of caries (It); incidence of untreated and treated caries (Id, If).
  
  
  RESULTS
  The results show that the caries indicators are higher in the children from Karlovo and Sopot than in their pairs in Plovdiv. Inadequacy of the children dental care system and stomatological treatment was found in both studied groups.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Medical University, 15A Vassil Aprilov St., 4000 Plovdiv, Bulgaria.
authors.forename: Emilia L
authors.initials: EL
authors.lastname: Ilieva
authors.forename: Vania K
authors.initials: VK
authors.lastname: Veleganova
authors.forename: Ani B
authors.initials: AB
authors.lastname: Belcheva
mesh_terms: D002031:Bulgaria / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D019140:Dental Care for Children; D003731:Dental Caries / Q000453:epidemiology*; D006801:Humans; D014094:Tooth, Deciduous