Protective effect of anti-erosive solutions enhanced by an a
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To investigate if an amino methacrylate copolymer (AMC) could potentiate the anti-erosive effect of solutions containing sodium fluoride -F (225 ppm F) and sodium fluoride associated with stannous chloride -FS (800 ppm Sn2+) a study was evaluated.

The experimental solutions (F, FS, amino methacrylate copolymer, AMC + F, AMC+FS, and deionized water-DW as negative control) were tested in the presence of an acquired pellicle. Polished bovine enamel specimens were submitted to an erosion-rehardening cycle (2 h immersion in human saliva, 5 min in 0.3 % citric acid, 1h in human saliva, 4×/day, 5 days). Treatment with the solutions was performed for 2min, 2×/day. The rehardening (%Re) and protective (%Prot) potential of the solutions were assessed in the beginning of the experiment, and the surface loss (SL) by contact profilometry after 5 days.

The presence of amino methacrylate copolymer significantly reduced the contact angle on enamel surfaces. The HA presented a strongly negative surface charge after the treatment with DW, F, and FS, whereas after the treatment with the solutions containing amino methacrylate copolymer it became positive. Amino methacrylate copolymer has the potential to enhance the anti-erosive effect of fluoride solutions. The amino methacrylate copolymer (AMC) may be a promising agent to be added to oral care products for the prevention of erosive tooth wear.

Source:https://www.sciencedirect.com/science/article/abs/pii/S0300571220302888
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