Fig. 20

a) Small FOV CBCT showing curved mesio-buccal root with perforation. The scan reveals the proximity of the sinus, adjacent roots, the amount of bone preparation required to expose the mesio-buccal root. b) Depth of resection required for removal. The root was obturated with biodentine and resected surgically. c) Two-year postoperative IOPA radiograph showing signs of bone regeneration