NEW VARNISHES ALTERNATIVE TO FLUORIDE FOR PREVENTION OF DENTAL EROSION

The present study aims to evaluate the effects of fluoride varnish (FV), bioactive glass varnish (BV), sodium-trimetaphosphate treated eggshell, and eggshell membrane containing varnish (EV) against dental erosion. In this study, 27 teeth were cut using a low-speed diamond separator. Two 2x3 mm windows were created on buccal surfaces, and the remaining area was covered with acid-resistant nail polish. Fluoride varnish, Bioactive glass varnish, Sodium-trimetaphosphate treated eggshell, and eggshell membrane containing varnish were applied to one of the windows, and the other window was used as a control. Using separate containers, samples were immersed in cola drink for two minutes and shaken gently. Then, the samples were kept in 0.4 ml artificial saliva for two minutes. This pH cycle was repeated four times. The surface properties of the samples were examined in a scanning electron microscope, the Ca, P, F, O, C, Mg and Na ratios were determined, and the Ca/P ratio was calculated. The Ca/P ratio in the area where FV is applied is 1.56, lower than 1.61, the stoichiometric ratio in human enamel. This ratio was 1.50 in the FV control group. The Ca/P ratio was 1.63 in the BV group and 1.51 in the BV control group, 1.63 in the EV group, and 1.52 in the EV control group. No statistical difference was found among the groups. On the enamel surface treated with BV and EV, a protective layer was observed. Against dental erosion, BV and EV can be used as an alternative to fluoride varnishes.