2.2.2. Kedo-SG Blue Instrumentation
WL
Kedo-SG Blue was used for root canal instrumentation on the patients in this group. It is a one file system, and the E1 file employed in this study has a #30 tip with an alternate taper of 0.04 to 0.08. (Reeganz Dental Care, Chennai, India). These are 16-mm files that were driven by an electronic endomotor at 250 rpm and 2 Ncm torque (X-Smart Plus; Dentsply Maillefer, Ballaigues, Switzerland). There was no pre-flaring done. Until the WL was achieved, a permissive alternating apico-coronal motion was implemented. The irrigation protocol was performed similarly as reported in the first group.