Endodontic Retreatment of the Upper Second Premolar

Case Overview This case presents the non-surgical endodontic retreatment of the upper second premolar (tooth 15). The patient was referred following persistent periapical pathology associated with a previously root-canal-treated tooth. The retreatment was undertaken to address inadequate obturation, residual infection, and apical periodontitis, with the goal of preserving the natural tooth and restoring periapical health. Patient Presentation The patient presented with a history of endodontic treatment performed several years prior. Chief complaints included intermittent tenderness to percussion and mild discomfort on biting in the region of the upper second premolar. The tooth had been previously restored with a coronal composite restoration. No sinus tract, no spontaneous pain, and no significant soft-tissue swelling were recorded at the time of examination. Radiographic…