Abstract
Objective:In the present investigation, the anticariogenic effect of fluoride released by two products commonly applied in infants was evaluated.Methods:Bovine sound enamel blocks were randomly allocated to each one of the treatment groups: control (C), varnish (V) and diamine silver fluoride solution (D). The blocks were submitted to pH cycles in an oven at 37°C. Next, surface and cross-sectional microhardness were assessed to calculate the percentage loss of surface microhardness (%SML) and the mineral loss (∆Z). The fluoride present in enamel was also determined.Results:F/Px10-3(ANOVA, p<0.05) in the 1stlayer of enamel before pH-cycling were (C, V and D): 1.61a; 21.59band 3.98c. The %SMH (Kruskal-Wallis, p<0.05) were: - 64.0a, -45.2band -53.1c. %∆Z values (ANOVA, p<0.05) were: -18.7a, -7.7band -17.3a.Conclusion:The data suggested that the fluoride released by varnish showed greater interaction with sound enamel and provided less mineral loss when compared with silver diamine solution.
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