 If extensive loss of tooth structure occurs, extraction may be the only treatment option.Research comparing endodontic therapy with implant therapy is considerable, both as an initial treatment and in retreatment for failed initial endodontic approaches.Endodontic therapy allows avoidance of disruption of the periodontal fiber, which helps with proprioception for "occlusal feedback", a reflex important in preventing patients from chewing improperly and damaging the temporomandibular joint.