Comparison of Endodontic Postoperative Pain Using Different Irrigation Systems

the irrigation of root canals will be done with 2.5 % sodium hypochlorite. The delivery of the irrigant will be done using 27G side-vented endodontic irrigation needles (Omega, Inc). The tip of the needle will be pre-measured and positioned within 1 millimeter of the working length. No activation of the irrigant will be performed.

the irrigation of root canals will be done with 2.5% sodium hypochlorite. The delivery of the irrigant will be done using 27G side-vented endodontic irrigation needles (Omega, Inc). The irrigant will be activated with ultrasonic energy using the Endo-1 Ultrasonic Endo Activator (Guilin Woodpecker, Guilin, China). The tip of the Endo-1 Ultrasonic Endo Activator device will be pre-measured and kept within 1 mm from the working length. The manufacturer's instructions regarding irrigant activation will be followed.