W A da Cunha1, L F Palma2,3, C Shitsuka4, F N P Corrêa5, D A Duarte6, M S N P Corrêa7. 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. luizfelipep@hotmail.com. 3. Graduate Dentistry Program, Ibirapuera University, Av. Interlagos, 1329, Chácara Flora, São Paulo, SP, 04661-100, Brazil. luizfelipep@hotmail.com. 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.
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.
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.