title: [Investigation of deciduous teeth caries in children under 14-year-old].
abstract: OBJECTIVE
  To investigate the caries prevalence of children under 14-year-old in three districts (Nanshi,Luwan,Xuhui) of Shanghai. To provide the first-hand data for prevention of children caries.
  
  
  METHODS
  The standard of second whole national investigation regime of oral epidemic disease was used.
  
  
  RESULTS
  When the children grow up,the caries incidence and dft increased. In 7-year-old group the values were 83.33% and 3.78,respectively. After that the values decreased for the alternation of deciduous teeth and permanent teeth. The caries incidence was almost the same in boys and girls. The caries incidence in lower jaw was higher than that in upper jaw. The caries incidence was highest in lower jaw D and E. The lowest caries incidence was found in lower jaw A and B. The incidence and dft decreased compared with before. At the same time, the filling rate of deciduous teeth also decreased.
  
  
  CONCLUSIONS
  The oral hygiene knowledge for children is disseminated. It is important for children to find a solution to improve the filling rate of deciduous caries.
authors.affiliation: Department of Preventive Dentistry, School of Stomatology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
authors.forename: C B
authors.initials: CB
authors.lastname: Shu
authors.forename: X P
authors.initials: XP
authors.lastname: Feng
authors.forename: Y
authors.initials: Y
authors.lastname: Pan