Reduction of Post-endodontic Pain After 3 Irrigation Regime

Patients assigned to this group will receive a final irrigation (application of cryotherapy) with 5 mL cold (8oC) 17% EDTA followed with 20 mL cold (8oC) sterile saline solution delivered to the WL using a cold (8oC) sterile microcannula attached to the Endo Vac System (Kerr Endo) for 5 minutes.

Patients assigned to this group receive a final irrigation (application of cryotherapy) with 5 mL cold (2.5oC) 17% EDTA followed with 20 mL cold (2.5oC) sterile saline solution delivered to the WL using a cold (2.5oC) sterile microcannula attached to the Endo Vac System (Kerr Endo) for 5 minutes.

Patients assigned to this control group were treated identically to the experimental groups, except that they will receive a final irrigation ( application of irrigant at room temperature) with 5 mL (room temperature) 17% EDTA followed with 20 mL (room temperature) sterile saline solution delivered to the WL using a sterile microcannula attached to the Endo Vac System (Kerr Endo) for 5 minutes.