Nanotechnology in Dentin Disinfection: Can We Preserve the Bond?

AIMS: The aim of this study is to evaluate the effect of cavity disinfection with 2% chlorhexidine (CHX) and Ag–Au nanoparticles on microleakage and resin tag penetrability of composite restoration under in vitro conditions. MATERIALS AND METHODS: Twenty-five human permanent molars extracted for therapeutic reasons were used in the study. Class V cavity of standard dimension was prepared on the buccal and lingual surfaces of the teeth. The teeth were randomly allocated into two groups based on the cavity disinfectant used: group I being 2% CHX gluconate (chlorhexidina Friedrich and Bianca Mittelstadt (FGM)) and group II being cavity disinfectant containing Ag–Au nanoparticles (nanocare gold). In both the groups, the dentin was etched with 37% phosphoric acid and cavity disinfectants were applied following which dentine bonding agent and composite resin were applied and cured. The specimens were then viewed under a stereomicroscope and a scanning electron microscope for microleakage and resin tag formation, respectively. RESULTS: The results were statistically analyzed using an independent “t” test. No significant difference was seen between the two groups with respect to both microleakage and resin tag penetration values (p > 0.05). CONCLUSION: The cavity disinfectant containing Ag–Au nanoparticles did not affect the sealing ability and resin tag penetrability of composite resin in permanent molars when compared with 2% CHX. HOW TO CITE THIS ARTICLE: Attiguppe P, Tripathi AP, et al. Nanotechnology in Dentin Disinfection: Can We Preserve the Bond? Int J Clin Pediatr Dent 2019;12(1):42–46.