Differences in loosely bound fluoride formation and anticaries effect of resin-based fluoride varnishes

作者：Maas Jorge R S; Faraco Junior Italom; Lodi Carolina S; Delbem Alberto C B^*

来源：International Journal of Paediatric Dentistry, 2013, 23(3): 166-172.

DOI：10.1111/j.1365-263X.2012.01240.x

International Journal of Paediatric Dentistry 2013; 23: 166172 Objective. Our in vitro study evaluated calcium fluoride formation in enamel and the anticaries effect of seven resin-based varnishes under cariogenic challenge. Methods. Enamel blocks were subjected to pH cycling. The experimental groups received fluoride varnish application, the positive control received topical fluoride gel treatment, and the negative control did not receive any treatment. The pH cycling surface hardness (SH1) and integrated loss of subsurface hardness (KHN) were then determined. We measured the amount of fluoride released into the demineralizing and remineralizing (DERE) solutions used in pH cycling. The fluoride concentration in the enamel was determined 24h after application of the products as loosely bound fluoride and firmly bound fluoride. Results. Higher deposits of loosely bound fluoride were observed for Duofluorid, followed by Biophat. For Duraphat, Bifluorid, Duraflur, and Duofluorid, no difference was observed in the SH1 and KHN values, with the lowest mineral loss compared to the other groups. The Bifluorid and Duofluorid groups released high fluoride amounts into the DERE, and statistically significant difference was noted between them. Conclusions. The anticaries effect showed no correlation with higher deposited fluoride amounts, resin type, or fluoride source.

• 出版日期2013-5