At Washington's Hotel Shoreham one day last week, 3,000 dentists were shown an easy way of putting themselves halfway out of business. Dr. John Knutson, of the U.S. Public Health Service, demonstrated the best way of swabbing children's teeth with fluoride.*Properly done, the swabbing appears to reduce cavities by 40 to 50% (TIME, Aug. 18).
By using dental hygienists in schools, the cost, according to U.S.P.H.S. doctors, can be reduced t010¢ a tooth. A gallon of 2% sodium fluoride, enough to treat the whole school population in an average-sized community, costs 5¢. But 16...
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