Comparison of apical third cleanliness of smear layer using Endoactivator® and Vibringe®

Root canal preparation will form a smear layer that may prevent root canal filling material penetration into the dentinal tubules at the apical third of the root canal. irrigation of the root canal system permits removal of residual tissue needs proper irrigation techniques and material. this study obtain data over smear layer cleanliness in the apical third that irrigated with two sonic irrigation techniques. thirty permanent premolars were divided into three groups. group e were using endoactivator® techniques. group v were using vibringe®,and k as the manual control group . those three irrigation technique were examined using sem in all groups . débridement efficacies were analysed kolmogorov - smirnov and give results: there was no significant difference between groups e and v ( p = 0.059 ) both types of sonic irrigation techniques showed no statistically significant differences. descriptively,endoactivator® sonic irrigation techniques gives better result than vibringe® and manual controls.