Endo-perio lesion associated with a calculus like deposit at the root apex of a maxillary central incisor-a case report

This case report describes about a calculus like deposit seen at the root apex of a maxillary right central incisor having apical periodontitis. A 22 year old male patient came for the treatment of his discolored upper right central incisor with sinus tract and pus drainage. Root canal treatment did not solve the problem, as there was persistence of sinus tract even after the treatment. Hence periradicular surgery was planned and dark-brown, calculus-like deposit was noted at the root apex of the tooth during the surgery, which was carefully removed, followed by root-end resection and root-end filling. Asix months follow upperiapical radiograph showed decrease in the periapical radiolucency and the patient is asymptomatic with complete healing of the labial mucosa of the tooth.