Impact of sodium fluoride and nano silver fluoride-based varnishes on remineralisation of enamel caries: an in-vitro study

Background: The aim of this study was to perform a comparative evaluation 5% Sodium fluoride varnish, neutral nano silver (NSF) varnish and acidulated in remineralising artificially induced enamel caries primary teeth. Methods: 39 anterior teeth were sectioned 2mm below the cemento-enamel junction (CEJ) mounted acrylic resin blocks. Incipient on samples Vicker’s surface microhardness (SMH) assessed. Samples divided equally applied varnishes; Group 1: varnish; 2: Neutral NSF 3: Acidulated varnish. A pH cycling protocol 7 days followed, second Surface testing carried out. One sample from each group observed for Scanning electron microscopy Energy Dispersive Spectroscopy (SEM EDS). Statistical analysis conducted using HSD Tukey one way ANOVA tests. Results: There statistically significant difference between pre-treatment post-treatment values all three groups. SMH after applying (p<0.01). Similarly, also showed statistical significance However, application not significant. SEM EDS revealed presence an even fine granular layer minerals treated whereas other groups uneven deposits minerals. containing NSF. Conclusions: has highest efficacy followed by remineralisation teeth.