Root canal treatment
WL
LOCAL ANESTHETICS
Local anesthetic (1:80,000 Arcaine, Aarge Pvt Ltd., India) was administered, and endodontic access was achieved under rubber dam isolation. A periapical radiograph was used to confirm the working length that had been determined using an apex locator (Root ZX mini, J. Morita, Japan). Following the manufacturer’s specifications, canals were mechanically prepared using an engine-driven rotary nickel titanium Protaper Next system (Dentsply Maillefer, Ballaigues, Switzerland) with finishing files ranging from F1 to F5, depending on the canal’s original diameter. Using a torque-controlled endodontic motor (X-Smart; Dentsply Sirona) and the SX tool (ProTaper Universal; Dentsply Sirona, Ballaigues, Switzerland), the coronal section of the canals was enlarged. Each canal’s final apical preparation size was selected three sizes larger than the first binding file at the WL with a minimum apical diameter of size 25. Irrigation was accomplished using a 27-gauge needle attached to a 3-mL syringe (Kendall; Covidien, Mansfield, MA, USA) with 2 mL of 2.5% NaOCl in between files. The needle was advanced to a depth of 2–3 mm short of WL. The final irrigation was done using 2-mL EDTA 17% (Denteck, Zoetermeer, Netherlands) followed by 3 mL of normal saline.