Effect of Passive Ultrasonic Irrigation Activation Cycle on Postoperative Pain

Conventional needle irrigation method was applied. As a final irrigation, 6 ml NaOCl was applied with 60 seconds of needle irrigation followed by 60 seconds of rest.

In the final irrigation, 6 ml (3×2 ml) NaOCl was activated by PUI for 20 seconds in 3 cycles (60 seconds total). Before each cycle, 2 ml of NaOCl solution was refreshment.

For the final irrigation, 6 ml (6×1 ml) NaOCl was activated with PUI for 10 seconds in 6 cycles (60 seconds total). Before each cycle, 1 ml of NaOCl solution was refreshment.