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Anticariogenic potencial of acidulate solutions with low fluoride concentration
Alberto Carlos Botazzo Delbem1, Gilberto Carlos Tiano, Karina Mirela Ribeiro Pinto Alves
1UNESP - São Paulo State University, School of Dentistry of Araçatuba - Department of Pediatric Dentistry, SP, Brazil. adelbem@foa.unesp.br
Objectives:
The aim of this study was to verify the anticariogenic effect of acidulate solutions with low NaF concentration, using pH-cycling model and bovine enamel.
Material And Methods:
Enamel blocks were submitted to the surface microhardness (SMH) test and randomly divided in 12 experimental and one placebo groups. The blocks were submitted to pH cycling for 7 days, with daily applications once/day of 0.05% NaF and 0.1% NaF and twice/day of 0.02% NaF solutions. Four different pH: 4.0, 5.0, 6.0 and 7.0 were used. Next, SMH test was again used to determine the surface microhardness percentage change (%SMH). Data obtained for %SMH were homogeneous and passed through variance analyses and Tukey's test (5%) as far as fluoride concentrations and pH.
Results:
The results showed that pH influenced %SMH in 0.02% NaF and 0.05% NaF solutions with pH 4.0, which had less mineral loss compared to pH 7.0 (p<0.05). The 0.02% NaF - pH 4.0, and 0.05% NaF - pH 7.0 groups showed similar results (p>0.05). A dose-response relationship was observed among the tested solutions, with better anticariogenic effect for the 0.1% NaF solution.
Conclusion:
The results suggest that the addition of citric acid to acidulate mouth rinses reduce mineral loss.
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