Smear layer removal efficacy of herbal extracts used as endodontic irrigants: An in vitro study

Abstract

Aim: This study aimed to evaluate the smear layer removal efficacy of various herbal extracts, namely, green tea extract, orange oil, and neem leaf extract using the scanning electron microscopic analysis. Materials and Methods: The samples were divided into four groups having ten teeth each (n = 10); the groups were divided accordingly, Group A: sodium hypochlorite (control), Group B: green tea extract, Group C: orange oil, and Group D: neem leaf extract. Each tooth was then split longitudinally and was prepared for examination by scanning electron microscope under ×1500 and ×3000. Statistical Analysis: The smear layer removal scores were compared statistically within the groups using analysis of variance and Tukey's honest significant difference test (P Results: The canals treated with neem leaf extract exhibited significant smear layer removal when compared to those treated with orange oil, sodium hypochlorite, and green tea extract. Conclusion: The highest amount of smear layer removal efficacy was seen in the canals treated by neem leaf extract.