https://www.selleckchem.com/pr....oducts/prt062607-p50
PURPOSE To explore the effect of sodium fluoride tooth protector combined with pit and fissure sealing to prevent caries in preschool children. METHODS Two hundred preschool children who were treated with pit and fissure closure from January 2014 to September 2014 were selected as subjects. According to random number table method, 100 cases were divided into the combined group and the control group. Children in the control group were treated with pit and fissure sealant for prevention of caries, while children in the combi
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