Apical control zone

Despite the various advances in root canal treatment, the morphology of apical third will never change. Terminal region of apical third of the root is called as apical terminus; this region can be anatomically challenged, altered by pathologic resorption or iatrogenic misadventure. Main objective for successful endodontic treatment is to clean and fill the apical third of root without altering its original morphology. To maintain the morphology of apical third we need to preserve the apical constriction. Keeping the apical constriction at its original position and size by utilizing newer and advanced aids, has great value for the prevention of iatrogenic events, facilitating excellence in irrigation, instrumentation,obturation as well as regeneration and providing the best possible clinical result.