Manejo de grande cisto radicular pela terapia endodôntica cirúrgica: relato de caso

Objective: To demonstrate a surgical treatment of a large infected root cyst associated with the upper lateral incisor through a case report. Case Report: Patient reported a major complaint of swelling in the palatal region that was present for 6 months. The patient was submitted to non-surgical endodontic treatment. After clinical and radiographic examinations, decompression marsupialization was performed to create a window on the buccal cortical wall and an acrylic resin drain was installed in the depth of the cystic cavity. Two months later, a procedure was planned with cystectomy and apicoectomy on tooth 12, enucleated cyst, bone graft and barrier with purified collagen sponge. After enucleation, a sample of the cystic capsule was examined histologically and the diagnosis of periapical cyst was confirmed. Conclusion: After 1-year, clinical cicatrization and radiographic resolution of the maxillary radiolucency were verified and the patient did not present painful symptoms, demonstrating the success of the treatment performed