Before revision: Care should be taken to avoid pushing instruments through the apex Remnants of the pulp are then removed using barbed broaches and files The canal is flushed with hydrogen peroxide to remove debris and is then irrigated with sodium hypochlorite and saline Calcium hydroxide is placed in the canal and an endodontic plugger is used to push the material to the apical end A cotton pledget is placed over the calcium hydroxide and the cavity is sealed with reinforced zinc oxide-eugenol cement .
After revision: Care should be taken to avoid pushing instruments through the apex Remnants of the pulp are then removed using barbed broaches and files The canal is flushed with hydrogen peroxide to remove debris and is then irrigated with sodium hypochlorite and saline The material of choice is placed in the canal and an endodontic plugger is used to push the material to the apical end A cotton pledget is placed and the cavity is sealed with reinforced zinc oxide-eugenol cement