Epidemiological Survey Of Developmental Defect Of Enamel In Primary Dentition Of Chidren Aged 3 To 5 In Shanghai Pudong District And Analysis Of Related Factors

Objective: To investigate the prevalence of developmental defect of enamel and its associated factors in the primary dentition of children aged 3 to 5 in Shanghai Pudong District,China.To analyze the relationship between DDE and early childhood caries to provide epidemiological data and preventive evidence of hypoplasia-associated severe early childhood caries.Methods: Clinical examination and questionnaire survey were used to make a cross-sectional survey of randomly selected 1500 children aged 3 to 5 in shanghai Pudong District,China.The clinical examination included DDE and caries.The questionnaire survey included the basic information and questions associated with DDE of primary teeth.Results: The prevalence of DDE in the primary teeth of children aged 3 to 5 in Shanghai Pudong District was 34.6%,including 17.3% of the whole valid samples had hypoplasia in primary dentition.Age,sex,childhood anemia and alcohol intakes during mother’s pregnancy were associated to DDE of primary teeth.And the prevalence of dental caries of children with DDE is significantly higher than children without DDE(64.2% compared to 40.2%,p<0.05).Conclusion: The prevalence of DDE in the primary teeth of preschoolchildren aged 3 to 5 in shanghai Pudong District was 34.6%,and the prevalence of enamel hypoplasia(EHP)in the primary teeth was 17.3%.Age,sex,childhood anemia and alcohol intakes during mother’s pregnancy were associated to DDE of primary teeth.DDE in the primary teeth was a potencial risk factor of early childhood caries.