title: [Epidemiological survey of early childhood caries for 5 year-old children in Langfang, Hebei in 2013].
abstract: OBJECTIVE
  To explore the early childhood caries (ECC) status of 5 year-old preschool children in Langfang, Hebei province.
  
  
  METHODS
  For this cross-sectional study, a multiple stratified and cluster randomized sampling method was used to select 745 5-year-old preschoolers from 5 local districts.Oral health examination was performed to collect information for 726 children with a response rate of 97%.
  
  
  RESULTS
  The prevalence of ECC was 61.6% and dmft 2.97. The differences of caries level among sampled districts were statistically significant. The percentage of filled teeth among filled and decayed teeth was 2.5% and that for untreated caries 97.4%. Anterior teeth caries accounted for 41.5% and the percentage for posterior teeth was 58.5%. The percentage of pit and fissure caries was 21.8% and that for smooth surface caries 77.4%.
  
  
  CONCLUSIONS
  ECC is a public health issue for preschoolers in Langfang. And a large majority of caries remain untreated. Integrated ECC treatment and prevention programs are urgently needed.
authors.affiliation: Department of Preventive Medicine, Affiliated Beijing Stomatology Hospital, Capital Medical University, Beijing 100050, China.
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Gao
authors.forename: Peng
authors.initials: P
authors.lastname: Sun
authors.affiliation: Email: hanyc919@163.com.
authors.forename: Yongcheng
authors.initials: Y
authors.lastname: Han
mesh_terms: D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003731:Dental Caries / Q000453:epidemiology*; D006801:Humans; D015995:Prevalence; D011634:Public Health