Dentistry: And Now, the Brush-In

U.S. cavity consciousness reached some sort of peak last week in Monroe County, Ind. In field houses, armories, factories, football stadiums and high school gymnasiums, more than 29,000 people gathered to scrub their teeth for about 21 minutes, as part of a mass "brush-in" to demonstrate the decay-preventing qualities of a new dental paste. The paste, manufactured under the name of Zircate, reportedly guards against cavities for as long as a year—after only one application.

Developed at Indiana University by Dr. Joseph C. Muhler and Dr. George Stookey, the prophylactic paste embodies more...

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