Figure 1: (a) Preoperative probing depth of 7 mm in lingual aspect of 36, (b) intra-oral periapical radiograph revealing perforation in the distal root of 36 extending up to the furcation, (c) hemisection of the distal half done and the section removed, (d) socket filled with bone graft particles, (e) 6 months postoperative radiograph, (f) 6 months postoperative view of the surgical site