Objective: This in vitro study evaluated the effect of professional fluoride therapies against enamel erosion. Methods: Ninety bovine enamel blocks were randomly allocated to each group: GI-Duraphat® (NaF, 2.26%F), GII-Duofluorid® (NaF, 2.71% F), GIII-TiF4 varnish (2.45% F), GIV- TiF4 solution (2.45% F), GV-no fluoride varnish and GVI-water (control). The varnishes, the solution and water were applied onto the enamel. The blocks were subjected to 6 sequential erosive cycles (cola drink for 10 min and artificial saliva for 50 min, each) per day, during 4 days. After the erosive cycles, the blocks were maintained in artificial saliva for 18 h. Enamel alterations were determined in the 2nd and 4th days, by microhardness test (%SMHC). Data were tested using ANOVA and Tukey`s tests (p<0.05). Results: The mean %SMHC (SD) in the 2nd and 4th days was, respectively: GI (-78.13±4.08a and -90.01±2.83A), GII (-77.70±5.26a and -89.63±6.08A), GIII (-88.93±2.65b and -91.90±2.4A,B), GIV (-92.23±2.21b and -97.16±1.43C), GV (-87.72±2.04b and -94.16±1.14B,C) and GVI (-88.10±1.51b and -93.12±1.93 B). Conclusion: The data from this in vitro study show that NaF varnishes were able to partially prevent softening from dental erosion until the 4th day of erosive cycle.
Biografia do Autor
Heitor Marques Honório, Universidade Federal de Alfenas (UNIFAL-MG)
Heitor Marques Honório é Cirurgião Dentista formado pela Faculdade de Odontologia de Bauru-USP (1999). Concluiu o mestrado (2003) e o doutorado (2006) em Odontopediatria também pela Faculdade de Odontologia de Bauru-USP. Atualmente é Professor Adjunto do departamento de Clínica e Cirurgia (Disciplina de Odontopediatria) da Universidade Federal de Alfenas (UNIFAL-MG)
