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Aim: The aim of this study was to check the difference in the apical extrusion of 2.5% NaOCl and 17% EDTA irrigants using conventional technique (manual irrigation) and Endo Activator system irrigation. Materials and Methods: 40 human mandibular premolars which were freshly extracted having straight single canals and mature apices verified with radiograph were selected for this study. They were divided into two main groups (A and B) depending upon the irrigant used which was further divided into subgroup (I and II) depending upon irrigation technique manual or EndoActivator respectively. The canals of each tooth were prepared using Endomotor (X-SMART DUAL) and rotary Protaper (Dentsply Mallifer) upto size F3. Eppendorf tubes were used to mount each tooth specimen and this acted as a container for collecting irrigant. The specimens were weighed before and after irrigation and the difference was calculated. Results: Results were calculated using Mann Whitney U-test keeping level of significance set at P<0.05. Intergroup and Intragroup comparison revealed more apical extrusion of 2.5% NaOCl as compared to 17% EDTA. Extrusion was more using EndoActivator because of agitation effect. Conclusion: On manual irrigation more apical extrusion of 2.5% NaOCl as compared to 17% EDTA was seen. Agitation with EndoActivator caused more apical extrusion of both 2.5% NaOCl and EDTA compared to needle and syringe irrigation

international journal of oral health dentistry

Comparative evaluation of apical extrusion of 2.5% NaOCl and 17% EDTA when used as root canal irrigants with manual irrigation and EndoActivator system irrigation- An invitro study