Efficacy of fluoride varnishes with different compositions on white spot lesions remineralization

Objective: To evaluate the efficacy of different fluoride varnishes on white spot lesions (WSL) remineralization. Material and Methods: Polished bovine enamel specimens were obtained (n = 60) had their initial surface Knoop microhardness (SMH) determined. WSL created SMH was measured again. Then, allocated into six groups: C – Control (without varnish); BF Bifluorid 12 (6% NaF + 6% CaF2); DP Duraphat (5% NaF); PF Profluorid FP - Fluor Protector (0.2% 0.9% difluorsilane); CW Clinpro White Varnish 5% TCP). After application, immersed in artificial saliva for 24 h. pH-cycling performed 8 days measured. Data analyzed by one-way ANOVA Tukey’s test. Results: Non-significant differences observed among groups at baseline (p 0.187) after formation 0.999). treatments, significant 0.001). Mean % alteration (SD) results Tukey test were: C- 92.40 (12.10)a; PF- 88.66 (10.66)a; FP- 85.90 (14.49)ab; BF- 67.85 (17.86)bc; CW- 66.60 (18.48)c; DP- 58.62 (8.69)c. Conclusion:. 12, Varnish, showed higher than promoting remineralization WSL, nevertheless, none treatments able to recover sound microhardness. Keywords Dental caries; Fluoride; Fluoride varnishes.