About H. Trendley Dean
Henry Trendley Dean was the first director of the United States National Institute of Dental Research and a pioneer investigator of water fluoridation in the prevention of tooth decay. Henry Trendley Dean (August 25, 1893 – May 13, 1962) was the first director of the United States National Institute of Dental Research and a pioneer investigator of water fluoridation in the prevention of tooth decay. At the urging of Frederick McKay and others concerned with the brown-staining of teeth in certain regions of the country, Dean was asked to make this his first assignment at the Institute in 1931.
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