The Effect of Zinc Chloride and Potassium Ferrocyanide as a Caries Prophylaxis

Abstract

95 children, ages 8-14, received 1 application of ZnCl2 and K ferrocyanide to one-half the upper teeth and one-half the lower teeth. The untreated teeth in each child''s mouth served as controls. The same dentist made the pre-treatment and post-treatment examinations, and he had no knowledge of which quadrants of the mouths were being used for the expt. or the controls. No protection against dental caries of the deciduous or permanent teeth could be detected 13 mos. after the appln.