Punica granatum Peel Extract, Nano Chitosan, and Er: YAG on Canal Disinfection Against E. faecalis and Extrusion Bond Strength of Fiber Post to Radicular Dentin

Abstract

Objectives: Canal disinfectants (Sodium hypochlorite (NaOCI), Nano chitosan (NCS), Pomegranate peel extract (PPE), Er: YAG against E. faecalis and push out bond strength (PBS) of fiber reinforced composite (FRC) post to radicular dentin. Methods: Canals were prepared followed by obturation. Canal filling was performed up to 9 mm. Forty teeth were incubated with E. faecalis. The included specimens were allocated into 4 groups based on the irrigation. Group 1:2.5% NaOCl +17% EDTA, Group 2: Er: YAG +17% EDTA, Group 3: NCS +17% EDTA and Group 4: PPE +17% EDTA. E. faecalis survival rate was determined on the incubated samples. FRC post-bonding was performed on forty specimens and sectioned horizontally. PBS and failure mode analysis were performed using a UTM and stereomicroscope. Statistical tests were used to compare the means of PBS and the survival rate of E. faecalis. Results: Group 1 samples exhibited the minimum survival rate of E. faecalis. The highest survival rate was demonstrated by Group 4. The coronal third of Group 1 unveiled the maximum values of PBS. The apical section of Group 2 specimens showed the minimum bond integrity scores. Conclusion: Nano Chitosan proved to be potent as a canal disinfectant because it displayed antimicrobial efficacy against E. faecalis and PBS of fiber-reinforced composite post comparable to that of sodium hypochlorite.