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Volume 14
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Article

Activity of Fluoride Varnishes Containing Micrometric or Nanosized Sodium Trimetaphosphate against Early Enamel Erosive Lesions In Vitro

by
Liliana Carolina Báez-Quintero
1,
Juliano Pelim Pessan
1,
Mariana Emi Nagata
2,
Luigi Pedrini Guisso
1,
Alberto Carlos Botazzo Delbem
1,
Daniela Rios
3,
Caio Sampaio
1 and
Thayse Yumi Hosida
1,*
1
Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba 16015-050, SP, Brazil
2
Department of Oral Medicine and Dentistry for Children, State University of Londrina, Londrina 86057-970, PR, Brazil
3
Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, São Paulo 17012-901, SP, Brazil
*
Author to whom correspondence should be addressed.
Coatings 2024, 14(7), 855; https://doi.org/10.3390/coatings14070855
Submission received: 21 May 2024 / Revised: 27 June 2024 / Accepted: 30 June 2024 / Published: 8 July 2024
(This article belongs to the Special Issue Advanced Alloy Degradation and Implants, 2nd Edition)
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Abstract

This study aimed to assess the effects of fluoridated varnishes supplemented with micrometric or nanosized sodium trimetaphosphate (TMPmicro or TMPnano, respectively) against enamel softening in an early erosive model in vitro. Bovine enamel blocks (with mean surface hardness [SH] between 330.0 and 380.0 kgf/mm2) were selected and randomly assigned according to their SH (n = 8) into the following groups: Placebo (no fluoride/TMP; negative control), 5% NaF (positive control), 5% NaF + 5%TMPmicro, 5% NaF + 2.5%TMPnano and 5% NaF + 5%TMPnano. Blocks received a single application of the varnishes and were immersed in artificial saliva (6 h). Thereafter, the varnishes were removed and the blocks were subjected to four individual erosive challenges (1 min, citric acid, 0.75%, pH = 3.5, under agitation); SH was determined after each challenge. Data were subjected to ANOVA and Student–Newman–Keuls’ test (p < 0.05). Overall, the highest %SH loss was observed for the Placebo, followed by 5% NaF, 5% NaF + 5% TMPmicro, and both varnishes containing TMPnano, without significant differences between 2.5% and 5% TMPnano. It was concluded that TMP enhanced the effects of a 5% NaF varnish against enamel softening in an early erosive model in vitro, with an additional benefit from the use of nanoparticles over microparticles.
Keywords: fluoride varnish; polyphosphates; tooth erosion; topical fluorides; dental enamel fluoride varnish; polyphosphates; tooth erosion; topical fluorides; dental enamel

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MDPI and ACS Style

Báez-Quintero, L.C.; Pessan, J.P.; Nagata, M.E.; Guisso, L.P.; Delbem, A.C.B.; Rios, D.; Sampaio, C.; Hosida, T.Y. Activity of Fluoride Varnishes Containing Micrometric or Nanosized Sodium Trimetaphosphate against Early Enamel Erosive Lesions In Vitro. Coatings 2024, 14, 855. https://doi.org/10.3390/coatings14070855

AMA Style

Báez-Quintero LC, Pessan JP, Nagata ME, Guisso LP, Delbem ACB, Rios D, Sampaio C, Hosida TY. Activity of Fluoride Varnishes Containing Micrometric or Nanosized Sodium Trimetaphosphate against Early Enamel Erosive Lesions In Vitro. Coatings. 2024; 14(7):855. https://doi.org/10.3390/coatings14070855

Chicago/Turabian Style

Báez-Quintero, Liliana Carolina, Juliano Pelim Pessan, Mariana Emi Nagata, Luigi Pedrini Guisso, Alberto Carlos Botazzo Delbem, Daniela Rios, Caio Sampaio, and Thayse Yumi Hosida. 2024. "Activity of Fluoride Varnishes Containing Micrometric or Nanosized Sodium Trimetaphosphate against Early Enamel Erosive Lesions In Vitro" Coatings 14, no. 7: 855. https://doi.org/10.3390/coatings14070855

APA Style

Báez-Quintero, L. C., Pessan, J. P., Nagata, M. E., Guisso, L. P., Delbem, A. C. B., Rios, D., Sampaio, C., & Hosida, T. Y. (2024). Activity of Fluoride Varnishes Containing Micrometric or Nanosized Sodium Trimetaphosphate against Early Enamel Erosive Lesions In Vitro. Coatings, 14(7), 855. https://doi.org/10.3390/coatings14070855

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