Kalpana Pawar, Riya Kapadia, Sadashiv Daokar, Pawan Raktade, Ajay Jadhav, Neha Chavan

ABSTRACT

Aim: The purpose of this study was to evaluate the efficacy of three different irrigation delivery techniques; conventional syringe irrigation, ultrasonic irrigation and laser activated irrigation with 5% of sodium hypochlorite in apical third area. Methods: A comparative study regarding the penetration depth of sodium hypochlorite (NaOCl) solution in dentinal tubules using three methods, (1) conventional irrigation (CI), (2) ultrasonic irrigation (3) diode laser activated irrigation (LAI), conducted on 60 extracted mandibular premolar teeth with a single root canal. After decoronation with a diamond disc and working length determination, the canals were prepared upto 30.06 and the apical third were sealed with cyanoacrylate adhesive. Teeth were stained with crystal violet and then the samples were distributed into three experimental groups. Depth of the bleached zone was evaluated by stereomicroscope. Data were analysed by ANOVA test and Post- hoc Tukey’s test using IBM SPSS-20 software. Result: Statistical analysis indicated that ultrasonic irrigation had the highest penetration depth of sodium hypochlorite in the apical third area followed by diode laser activated irrigation and conventional syringe irrigation. Conclusion: Agitation with activation of the irrigant helps in its deeper penetration into the dentinal tubules.