COMPARISON EFFECT OF TWO REMINERALIZING VARNISHES ON DEMINERALIZED ENAMEL IN VITRO

Introduction: Dental caries is a multifactorial disease, with a continuous, dynamic, and chronic process that affects dental structure; in its initial stages it is known as an incipient lesion or white spot; a lesion that can be reversible through the use of fluorinated varnishes.Aim: To compare the remineralizing effect of two varnishes, Duraphat Colgate vs Fluor Protector Ivoclar TM on demineralized dental enamel under cyclical pH conditions.Materials and methods.60 retained third molars were sectioned mesiodistally and 120 working surfaces were obtained, they were randomly divided into the following groups, Group Duraphat Colgate (n=30), Group Fluoride Ivoclar TM Protector (n=30), Initial Lesion Group (IL n=30) and a Healthy Enamel group (n=30) used as control group.All groups were subjected to cyclical pH, alternating immersion in demineralizing (pH 4.4) and remineralizing (pH 7) solutions, applying the varnishes for 15 days.Results: The CDu group at 5 days of treatment had a median value of 354 HVN, at 10 days 352, and at 15 days 483 HVN, the FP group obtained 80 HVN at 5 days, 62 at 10 days, and 40 HVN at 15 days.The Ra values of the CDu group at 5 days 1.50.2mm, 10 days 0.60.2mm,and 15 days 0.90.1mm, the FP group at 5 days 0.60.4mm, at 10 days 1.60.1mmand 0.30.1mm at 15 days, if there were statistically significant differences between CDu and FP with a value of p0.05. Conclusions:The CDu group increased its hardness (483 HVN) even more than the HE group (315 HVN) at 15 days, in contrast, FP obtained the least hardness value of 40 HVN.The varnishes did remineralize and modify the roughness of all surfaces.