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![WESTERN Movie: Burt Lancaster in VENGEANCE VALLEY [English] [Full Western Movie] [Free Classic Film]](https://i.ytimg.com/vi/ltfy-jLaV44/mqdefault.jpg)
Fluoridation (USPHS, 1952)
This film describes fluoridation research, the benefits of adding fluoride to community water supplies, and various types of fluoride and methods of adding it. Grand Rapids, Michigan is presented as the earliest test case of public water fluoridation, and decreases in the incidence of tooth decay in that city are illustrated with bar charts and statistics.
Learn more about this film and search its transcript at NLM Digital Collections: http://resource.nlm.nih.gov/8600895A.
Learn more about the National Library of Medicine's historical audiovisuals program at: https://www.nlm.nih.gov/hmd/collections/films
