Abstract
Data have been presented to show that children born and reared in communities using domestic water supplies containing fluorides have only about % as many carious, filled, or missing teeth as compared with children born and reared in communities using fluoride-free water supplies. The results of these studies indicate that the optimum concn. of fluorine is about 1 p.p.m. The evidence suggests that dental caries may be partially controlled either by the addition of the optimum amt. of fluorine to domestic water supplies or by supplementing dietary of children with fluorides during the formative period of the teeth. Laboratory studies indicate that such procedures will be effective, but at present water fluorination studies have not been in progress long enough to give us direct evidence in this regard. The results of studies made to date indicate that there would be no hazard from a toxi-cologic standpoint in using these caries control procedures.

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