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Abstract
This study was carried out to investigate the prevalence of dental caries as well as developmental defects of enamel (fluorosis)and their correlation with fluoride level in water among primary school children in Ismailia governorate.Atotal of 5116 school children; 2609 boys and 2507 girls aged 6-11 years attending primary schools were examined. In Ismailia city children were grouped according to socioeconomic levels into high and low.In Fayed,Kantara East,Kantara west and Abu-Soware children were divided according to degree of urbanization into children from rural areas.Each age group was further subgrouped into boys and girls