Endodontic Retreatment of Tooth 2.1 with Symptomatic Apical Periodontitis

A young woman presented with localized pain in the area of tooth 2.1. Clinical examination revealed a vestibular swelling and marked tenderness to percussion, consistent with symptomatic apical periodontitis associated with an acute apical abscess. Rx Pre- op Two-dimensional radiographs and a CBCT scan (FOV 5×5, voxel size 120 μm) revealed a periapical radiolucency, a palatal perforation of the pulp chamber floor, and a severely calcified main root canal that had not been previously located. CBCT pre op An orthograde endodontic retreatment was therefore planned. After rubber dam isolation and local anesthesia with articaine 1:100,000, the previous root canal filling material was removed, the palatal chamber floor perforation was identified, and the calcified main canal was located. The working length…