Abstract
Purpose
Emerging data have suggested that acid erosion has become an increasing clinical problem in pediatric dentistry. This study aimed to investigate the abrasive effects of two commercial toothpastes on primary enamel eroded by orange juice using an in vitro model.
Methods
Thirty enamel slabs were obtained from primary teeth and then randomly assigned to three groups (n = 8) comprising two different toothpastes: G1-control-distilled water; G2-Dentifrice A (containing no fluoride); and G3-Dentifrice B (1.100 ppmF–NaF). Each slab had one half protected to provide a control side, and the other one was subjected to treatments. The slabs were submitted to daily erosive challenges (3×/day, 2 min) in concentrated orange juice (pH 3.38) associated with abrasive challenges using a tooth-brushing machine (150 brush movements for each cycle). During the experimental period, the slabs were kept in 37 °C artificial saliva, and the experiment was carried out for 5 days. The depths of the resulting eroded areas were measured by stylus profilometry. The data were analyzed using ANOVA and the Tukey–Kramer test (α = 5%).
Results
Tooth loss (µm, mean ± SD) was 2.46 ± 1.18 for G1, 3.32 ± 2.12 for G2 and 2.14 ± 1.03 for G3. Therefore, the NaF dentifrice (Dentifrice B) produced significantly less mineral loss (p = 0.04) than dentifrice A.
Conclusions
The findings suggest that fluoride toothpaste could protect primary enamel against erosion.
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Passos, V.F., Sousa, R.B.R.A., de Melo, M.A.S. et al. In vitro effect of children’s toothpaste on brushing abrasion of eroded primary enamel. Eur Arch Paediatr Dent 22, 157–162 (2021). https://doi.org/10.1007/s40368-020-00536-8
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DOI: https://doi.org/10.1007/s40368-020-00536-8