title: [The study on the clinical manifestation of developmental enamel defects in primary dentition].
abstract: OBJECTIVE
  To study the clinical manifestation and its pathogenesis of the developmental enamel defects in primary dentition of children with low birth weight and premature birth history.
  
  
  METHODS
  One hundred and seventy-six children (aged 3-8 years old) were studied about the clinical manifestation of the developmental enamel defects in the primary dentition and its relationship with their medical history.
  
  
  RESULTS
  The prevalence of enamel defects in primary dentition in these children was 77.3%. There was no significant correlation between enamel defects and gender. Enamel opacity mostly affected the upper and lower second primary molars. Enamel hypoplasia mostly affected the maxillary and mandibular primary incisors and the maxillary first primary molars.
  
  
  CONCLUSIONS
  Enamel defects mainly result from children's general disorder at birth or within one year after birth.
authors.affiliation: Department of Pediatric Dentistry, School of Stomatology, Peking University, Beijing 100081, China.
authors.forename: Shuguo
authors.initials: S
authors.lastname: Zheng
authors.forename: Hui
authors.initials: H
authors.lastname: Deng
authors.forename: Yueqin
authors.initials: Y
authors.lastname: Bao
mesh_terms: D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D003743:Dental Enamel / Q000002:abnormalities*; D003744:Dental Enamel Hypoplasia / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D008963:Molar / Q000002:abnormalities; D015995:Prevalence; D014094:Tooth, Deciduous / Q000002:abnormalities*