Medicine: Ten Years for Teeth

Most people have heard that fluorine probably has something to do with keeping teeth healthy. They have read about the happy, cavity-free citizens of Deaf Smith County, Tex., where fluorine exists in judicious quantities in soil and water (TIME, Nov. 10, 1941). They have seen movies of Ripley, Ont., which has so much natural fluorine that the dentists' chief occupation is holding citizens' mouths open to display their perfect teeth. These demonstrations make laymen wonder why experimental use of fluorine has been limited to a few small-scale ventures.

Last week came the news...

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