Dr. Francis A. Bull, dental director of the Wisconsin State Board of Health, had studied the statistics and to him they added up to an important conclusion: wherever fluorine is naturally present in a public water supply, there is 65% less tooth decay than normal among the population that uses it. Last week in San Francisco Dr. Bull urged the 90th annual meeting of the American Dental Association to stop testing, experimenting and delayingnow that the evidence is already overwhelming. Why not, he asked, get going at once on a broad program to add fluorine artificially to all reservoirs?
The dentists reacted...
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