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Action of Streptococcus mutans on Dental Enamel Pretreated with Stannous Fluoride

Untreated human teeth and teeth treated with stannous fluoride were incubated for 14 days in a base medium that contained Streptococcus mutans. When the teeth were viewed under the scanning electron microscope, the untreated teeth exhibited damage of the enamel surface; damage was prevented partially by prior application of stannous fluoride.