Journal of Dental Research, Vol 60, 1943-1948, Copyright © 1981 by International & American Associations for Dental Research Online Journals
Fluoride uptake from in situ brushing with a SnF2 and a NaF dentifrice
M. J. Mobley
Fluoride uptake into decalcified human enamel was determined from in situ
brushing with a 0.40% SnF2-calcium pyrophosphate abrasive dentifrice, a
0.243% NaF-silica abrasive dentifrice, and a non-fluoride-silica abrasive
placebo dentifrice. Dentifrice treatments were compared using a randomized
block test design with 11 panelists, wearing specially fabricated partial
dentures that were able to hold two 3-mm-diameter enamel discs in proximal
positions. The enamel discs were analyzed for fluoride after two wk of
regular use of the test dentifrices. The mean fluoride contents after use
of the test dentifrices were 16.0, 8.4, and 4.6 micro/cm2 for the 0.243%
NaF, the 0.40% SnF2, and the placebo dentifrice, respectively. The
differences in the means were statistically significant. These uptake
results correlate well with the reported clinical efficacies of these
dentifrices.