Effect of NaF and TiF4 varnish and solution on bovine dentin erosion plus abrasion in vitro

Autor(es)

Magalhaes, Ana Carolina ^[1] ; Levy, Flavia Mauad ^[1] ; Rizzante, Fabio A. ^[1] ; Rios, Daniela ^[2] ; Rabelo Buzalaf, Marilia Afonso ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, Bauru, SP - Brazil

^[2] Univ Sao Paulo, Bauru Sch Dent, Dept Pediat Dent Orthodont & Publ Hlth, Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACTA ODONTOLOGICA SCANDINAVICA; v. 70, n. 2, p. 160-164, MAR 2012.
• Citações Web of Science: 19

Resumo

Objectives. This in vitro study aimed to analyze the effect of TiF4 compared to NaF varnishes and solutions, to protect against dentin erosion associated with abrasion. Materials and methods. Bovine dentin specimens were pre-treated with NaF-Duraphat (2.26% F), NaF/CaF2-Duofluorid (5.63% F), experimental-NaF (2.45% F), experimental-TiF4 (2.45% F) and placebo varnishes; NaF (2.26% F) and TiF4 (2.45% F) solutions. Controls remained untreated. The erosive pH cycling was performed using a soft drink (pH 2.6) 4 x 90 s/day and the toothbrushing-abrasion 2 x 10 s/day, in vitro for 5 days. Between the challenges, the specimens were exposed to artificial saliva. Dentin tissue loss was measured profilometrically (mu m). Results. ANOVA/Tukey's test showed that all fluoridated varnishes (Duraphat, 7.5 +/- 1.1; Duofluorid, 6.8 +/- 1.1; NaF, 7.2 +/- 1.9; TiF4, 6.5 +/- 1.0) were able to significantly reduce dentin tissue loss (40.7% reduction compared to control) when compared to placebo varnish (11.2 +/- 1.3), control (11.8 +/- 1.7) and fluoridated (NaF, 9.9 +/- 1.8; TiF4, 10.3 +/- 2.1) solutions (p < 0.0001), which in turn did not significantly differ from each other. Conclusion. All fluoridated varnishes, but not the solutions, had a similar performance and a good potential to reduce dentin tissue loss under mild erosive and abrasive conditions in vitro. Risk patients for erosion and abrasion, especially those with exposed dentin, should benefit from this clinical preventive measure. Further research has to confirm this promising result in the clinical situation. (AU)

• Processo FAPESP: 08/03727-0 - Avaliação do efeito de um verniz experimental de TiF4 comparado a vernizes e soluções de NaF e à solução de TiF4 sobre a erosão e abrasão do esmalte e dentina in vitro e in situ
• Beneficiário: Flavia Mauad Levy Abrahão
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado