The complex root canal anatomy plays a significant role in success and failure of endodontic treatment. Any communication from the root canal system to the periodontal ligament space should be thought of as a portal of exit through which endodontic breakdown products pass. Endodontic failures must be evaluated to prevent further irritation through continued contamination of the root canal system. The ultimate success of endodontic therapy is achieved when an adequate apical seal as well as coronal seal is considered important. Moreover the assessment of failure must be studied so as to decide the options of non–surgical or surgical retreatment or extraction. If proper guidelines and case selection is considered for non–surgical retreatment procedures, potential for success is enormous. This  paper presents a one year follow up case report of a 35 year old silver point obturation in the root canal system, and the effect of coronal and apical seal on the periapical status and its importance to increase the longevity of the tooth.