Protective effect of solutions with different fluorides used previously to erosive/abrasive challenges in enamel and dentin
DOI:
https://doi.org/10.22456/2177-0018.133066Keywords:
Tooth erosion, Fluorides, Dentin enamel, DentinAbstract
Aim: To evaluate the protection offered by commercial mouthwashes containing sodium fluoride or stannous chloride associated with sodium fluoride to enamel and dentin, prior to erosive and abrasive cycling. Materials and Methods: Enamel and dentin samples were obtained from bovine incisors and subdivided into 3 groups (n=10), according to the fluoridated ingredient tested: FS (sodium fluoride - NaF (225 ppm)); FE (tin fluoride - NaF + SnCl2 (800 ppm Sn2+)); control (distilled water). The samples were submitted to an erosive/abrasive cycle with immersion in citric acid (lemon soda for 5 min, 4×/day, 5 days, with remineralization intervals in artificial saliva for 60 min). Abrasion was carried out with an electric brush (200 g/force) after the first and last cycles, 2x/day, and immediately afterward immersed in the tested solutions. Structure loss was obtained by optical profilometry. The data were subjected to analysis of variance and multiple comparison for each substrate separately. Results: For enamel there was a difference between the groups (p = 0.027), with the FS showing less loss of structure compared to the control 2.02 (±0.48). The FE group showed similar loss to the control and FS 2.32 (±0.58)ab. For dentin there was a difference between the groups (p = 0.011), with FE showing less loss of structure compared to the other groups, 0.82 (25% - 0.34; 75% - 0.95). Discussion: The protection of fluorides in erosive/abrasive challenges depends on the type and dental substrate. Conclusion: Mouthwash with sodium fluoride prior to erosive/abrasive challenges caused less loss of enamel surface, while for dentin, sodium fluoride associated with stannous chloride caused less loss of structure.
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Copyright (c) 2023 Matheus de Paula Costa, Letícia de Andrade Balardini, Ítallo Emídio Lira Viana, Letícia Oba Sakae, Tais Scaramucci, Daniele Mara da Silva Ávila, Rayssa Ferreira Zanatta

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