Increased incidence of apical periodontitis was reported where root filling was found coronal to the marginal bone due to communication between pulp and periodontal space. It has been suggested to place intraorifice barrier in the canal to provide coronal seal. However there exists a void in literature regarding clinical validity of the termination of obturation apical to marginal bone and placement of intraorifice barrier in resolution of periapical pathology. Therefore this randomized controlled trial intends to investigate effect of coronal level of obturation on endodontic success and marginal breakdown.