بررسی اپیدمیولوژیک فلوروزیس و همراهی آن با بلع خمیردندانهای فلورایددار

ABSTRACT: Excess uptake of fluoride during tooth development can cause developmental defect of enamel that has not beautiful appearance. Fluoride uptake is mainly from drinkink water and a few percent from foodstuffs. At the time of toothbrushing with fluoride dentifrice by young children, toothpaste can be swallowed , and average of fluoride ingestion is 0.3-0.5 mg in each brushing . This excess fluoride can cause dental fluorosis. In this research, 848 schoolchildren from 11 to 13 years in Tehran were examined and prevalence of developmental defect of enamel was calculated with DDE index (Developmental Defect of Enamel index. It was observed that a significant relation existed between dentifrice use in preschool children (according to their history ) and enamel opacity in these children (P=0.02708) in comparision to those children that had not used fluoride dentifrice in preschool age .Probably ingestion of fluoride detifrice in preschoolchildren cause enamel opacity in permanent teeth.