(Comparative Evaluation of the Root Canal Cleanliness After Preparation Using Different Kinematics and Irrigant Activation Methods (SEM Study

Abstract

Successful root canal treatment of infected root canals depends on the removal of microorganisms through chemomechanical instrumentation of the root canal system. This can be achieved by different techniques and irrigant delivery devices where it increases the flow and distribution of irrigant solutions within the root canal system. The aim of this study was to compare cleaning ability of rotary (ProTaperNext) and reciprocating (WaveOne Gold) files after using passive ultrasonic and sonic irrigation techniques in removing smear layer and debris in apical, middle and coronal levels of the root canal. The mesial roots of sixty extracted human mandibular molar teeth were selected and divided into two equal groups (n = 30) according to the type of files used during root canal preparation: group I (PTN: using X1 #17/0.04 and X2 #25/0.06), and group II (WaveOne Gold: size #25/0.07 using primary file). Each group was further subdivided into 3 sub-groups (n =10) according to the irrigation techniques: subgroup A (Passive Ultrasonic Irrigation), subgroup B (Sonic irrigation), and subgroup C (Passive irrigation). During instrumentation, 2.5% NaOCL was used between files.