الفهرس | Only 14 pages are availabe for public view |
Abstract To compare the efficiency of two engine driven rotary systems ( the SafeSider and the Protaper universal retreatment files ) with a manual technique ( H - files ) in removal of gutta - percha from curved root canal . A total of 60 extracted mandibular human molars with fully formed apices and with curvature less than 25 degree were selected |