Abstract
Purpose
This study sought to evaluate in vitro the effect of a dentifrice containing sodium trimetaphosphate (TMP) combined or not with low fluoride (500 ppm NaF) on dentine erosion of intrinsic origin.
Methods
Human root dentine blocks were selected based on surface microhardness and randomly allocated into five groups (n = 12): negative control (0 ppm F; no TMP); F500 (500 ppm NaF); F1500 (1500 ppm NaF—positive control); TMP (1% TMP); and F + TMP (500 ppm NaF + 1% TMP). The blocks were submitted to erosion cycles (3 ×/day) for 3 days (0.01 M HCl, pH 1.5–30 s), treatment (1 min—1:3 p/p dentifrice/distilled water) and remineralization (artificial saliva/120 min). Dentine alterations were determined according to the percentage of microhardness loss (%HL), surface loss (SL) and surface analysis by scanning electron microscopy. The data were analyzed using one-way ANOVA (p < 0.05).
Results
The values of SL and %HL in each group were, respectively: negative control (1.36 ± 0.36; 57.29 ± 14.14), F500 (1.46 ± 0.28; 65.66 ± 5.11), F1500 (1.52 ± 0.36; 61.66 ± 5.15), TMP (1.45 ± 0.45; 62.08 ± 3.83) and F + TMP (1.38 ± 0.42; 63.38 ± 6.47). There was no statistically significant difference in all the parameters (p = 0.873 and p = 0.152).
Conclusion
The dentifrices containing TMP combined or not with fluoride were not able to prevent dentine erosion.
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Acknowledgements
To Prof. Dr. Alberto Carlos Bottazo Delbem, from Araçatuba Dental School, Brazil for the supply of dentifrices and Central Analítica at Federal University of Ceará (UFC/CT- INFRA/MCTI-SISNANO/Pró-equipamentos-CAPES) for the micrographics. We thank Wlhadya Kaeny de Freitas Costa for the technical assistance in the preparation of the specimens.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by CKKP, ICL, TAFRN and VFP, The first draft of the manuscript was written by CKKP, DLFL and SLSP and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Pereira, C.K.K., Leal, I.C., Nottingham , T.A.F.R. et al. In vitro effect of toothpaste with low fluoride combined with sodium trimetaphosphate on dentine erosion. Eur Arch Paediatr Dent 22, 843–849 (2021). https://doi.org/10.1007/s40368-021-00636-z
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DOI: https://doi.org/10.1007/s40368-021-00636-z