Efficacy of silver diamine fluoride and sodium fluoride in inhibiting enamel erosion: an ex vivo study with primary teet
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ORIGINAL SCIENTIFIC ARTICLE
Efficacy of silver diamine fluoride and sodium fluoride in inhibiting enamel erosion: an ex vivo study with primary teeth W. A. da Cunha1 · L. F. Palma2,3 · C. Shitsuka4 · F. N. P. Corrêa5 · D. A. Duarte6 · M. S. N. P. Corrêa7 Received: 22 March 2020 / Accepted: 19 August 2020 © European Academy of Paediatric Dentistry 2020
Abstract Purpose To assess the efficacy of silver diamine fluoride (SDF) and sodium fluoride (NaF) in inhibiting enamel erosion in primary teeth. Methods 80 primary canine teeth were immersed for 24 h in 2% NaF, 10% SDF, or distilled water. Afterward, some of them underwent a 10-min acid challenge using either 1% or 10% citric acid while others did not. Specimens selected for negative controls were immersed in distilled water but not exposed to the acids, whereas those selected for positive controls were not only immersed in distilled water, but also exposed to the acids. Following, 3-mL samples were collected for calcium and phosphorus analysis by an atomic emission spectrometer. Results 1% acid caused higher phosphorus loss in the positive control group than in the others (no differences between them). Regarding 10% acid, the SDF group showed lower phosphorus loss compared to the positive control and NaF groups. From calcium loss analysis, SDF and NaF groups presented no significant difference when compared to the positive control groups after both acidic challenges. Conclusion Considering phosphorus loss values, 10% SDF seems to be effective in inhibiting enamel erosion after 1% and 10% citric acid challenges, whereas 2% NaF only after 1% citric acid challenge. Regarding calcium loss values, both fluoride agents seem to have no impact on inhibiting enamel erosion after 1% and 10% citric acid challenges. Keywords Tooth erosion · Tooth demineralization · Deciduous tooth · Sodium fluorides · Silver diamine fluoride
Introduction * L. F. Palma [email protected] 1
Department of Pediatric Dentistry, University of Cruzeiro do Sul, São Paulo, Brazil
2
Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
3
Graduate Dentistry Program, Ibirapuera University, Av. Interlagos, 1329, Chácara Flora, São Paulo, SP 04661‑100, Brazil
4
School of Dentistry, Faculdades Metropolitanas Unidas, São Paulo, Brazil
5
Department of Pediatric Dentistry, School of Dentistry, São Leopoldo Mandic, Campinas, Brazil
6
Department of Pediatric Dentistry, Faculdade de Odontologia da Associação Paulista dos Cirurgiões-Dentistas, São Paulo, Brazil
7
Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
Dental caries is undoubtedly the most common oral disease in humans, affecting them at any stage in life (Baelum et al. 2007; Pitts et al. 2017). However, loss of dental hard tissues can also arise from erosion, a process characterized by a mineral loss when the tooth surface is systematically exposed to acids or chelates, without bacterial action (Schlueter et al. 2
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