Effect of experimental mouthrinses containing the combination of NaF and TiF4 on enamel erosive wear in vitro

Abstract Objective This study analysed the anti-erosive effect of experimental solutions containing TiF4 and NaF. Methods Bovine enamel samples ( n = 15) were treated with: (1) commercial solution with SnCl2 /NaF (Erosion Protection® ); (2) experimental solution with 0.0815% TiF4 ; (3) 0.105% NaF; (4) 0.042% NaF + 0.049% TiF4 ; (5) 0.063% NaF + 0.036% TiF4 or (6) control. The samples were submitted to pH cycles and daily fluoride applications for seven days. The enamel wear was measured using a contact profilometer and analysed by ANOVA ( p < 0.05). Results The best anti-erosive effect was found for experimental solution with 0.0815% TiF4 (99% reduction in enamel wear), followed by SnCl2 /NaF (78%) and 0.049% TiF4 + 0.042% NaF solution (41%). Conclusions The experimental solution containing a specific combination of TiF4 + NaF has the ability to partially reduce enamel erosion.