Show Fluorine Checks Decay A group of men working with hydrofluoric acid in an atomic energy energy en en- ergy project have been found to have unusually healthy teeth the Journal of the American Dental Association says The phenomenon is cited as additional ad evidence that fluorine is valuable in preventing dental de de- de cay The workmen laboring continuously continuously contin contino in an atmosphere laden with acid fumes were found to have less than half hall the number of dental fillings as others in the same plant not exposed to the fumes |