Medicine: Fluorine Works

The long test made by the New York State Department of Health to test the value of fluorine compounds in preventing tooth decay reached the stage of announcing results last week. The finding: fluorine, added to drinking water, does cut down tooth cavities.

For almost six years, the Department of Health had added small amounts of sodium fluoride to the drinking water in Newburgh, N.Y.* (pop. 31,924). To act as "control" for the test, the city of Kingston (pop. 28,869), 32 miles up the Hudson, went without fluorides. In both towns, schoolchildren between the...

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