IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-11-31899 Original Research Paper Comparative evaluation of apical extrusion of debris using different rotary file systems for shaping root canals - an invitro study Sha Dr. Rajesh Pillai Dr. Nikhil Murali Dr. November 2020 9 11 01 02