327 Efficacy of TiF4  varnish on dental erosion/abrasion in situ

Thursday, March 22, 2012: 2 p.m. - 3:15 p.m.
Presentation Type: Poster Session
F. LEVY1, D. RIOS2, M.A.R. BUZALAF3, and A.C. MAGALHES3, 1Bauru Dental School, Bauru, Brazil, 2Bauru School of Dentistry - University of So Paulo, Bauru-SP, Brazil, 3Biological Sciences, Bauru School of Dentistry - University of So Paulo, Bauru, SP, Brazil
Objectives: This in situ/ex vivo study aimed to analyse the impact of TiF4 varnish on human enamel and dentin wear induced by erosion and erosion plus abrasion.

Methods: Twelve subjects took part in this crossover and double-blind study performed in 3 phases of 5 days each. Each two human enamel and dentin samples were pre-treated with experimental-NaF varnish or NaF solution (both 2.45%F, pH 4.5) in phase A; experimental-TiF4 varnish or TiF4 solution (both 2.45%F, pH 1.2) in phase B; placebo varnish or control (untreated) in phase C. The varnishes were applied in a thin layer and removed after 6 h. The solution was applied to the enamel and dentin surfaces for 1 min. The samples were used in palatal appliances and one enamel and dentin sample, treated with one of the agents, was subjected to extraoral erosion (4 times/day, Coca-Cola, 90s, ERO) or erosion plus abrasion (2 times/day, fluoride-free toothpaste and electrical toothbrush, 10s/sample, ERO+ABR). The dental tissue loss was quantified by contact profilometry (µm). The data were analysed by two-way repeated-measures ANOVA and Bonferroni post hoc test (p<0.05).

Results: All F varnishes and solutions reduced the enamel and dentine wear significantly when compared to control and placebo varnish (p<0.001). In general, there were no significant differences among the F formulations and the conditions ERO and ERO+ABR.

Conclusions: TiF4 varnish has the same protective potential as TiF4 the solution and NaF-based products to reduce human enamel and dentin erosion alone or associated with abrasion in situ.

This abstract is based on research that was funded entirely or partially by an outside source: 2008-037270-FAPESP

Keywords: Dentin, Enamel, Erosion and Teeth