Comparative evaluation of the effect of ultrasonic and rotary agitation of herbal irrigating solutions on smear layer: A SEM study.

Context: Instrumentation and irrigation balance helps in effective removal of endodontic microbes housing inside the smear layer.

Aim: This study aimed to (1) evaluate whether activation of the irrigating solutions with two different systems during the final irrigation step can lead to smear layer formation in the middle and apical third of the root canal and (2) evaluate and compare the smear layer removal ability of the aqueous extracts of Emblica officinalis and Morinda citrifolia.

Materials And Methods: A total of 72 single-rooted teeth were prepared up to F4 ProTaper.