REGRESSÃO DE LESÃO PERIAPICAL EM PRÉ-MOLAR SUPERIOR APÓS TRATAMENTO ENDODÔNTICO REALIZADO EM ÚNICA SESSÃO

This study reported the repair of a circumscribed periapical lesion with a diagnosis suggestive of chronic periapical periodontitis. A 29-year-old male patient was referred for endodontic treatment of the upper premolar. Clinically, he was asymptomatic, with a negative response to the cold pulp sensitivity test performed with refrigerant gas. After anesthesia, coronary opening and root canal exploration were performed. The working length was determined with an apical locator, followed by gentle irrigation with sodium hypochlorite. The canal preparation was carried out with the Prodesign Logic 2, (35.05_ system and the foraminal patency was made with the Glide 25.1 file in the apical foramen. Obturation of the canal system was carried out using the HB single cone technique, associated with Bio-C Sealer cement. . Clinical and radiographic follow-up was carried out one year after filling the canal, showing repair of the periapical bone radiolucency. It is concluded that the success of endodontic therapy is achieved when the diagnosis, sanitation of the canal system and a hernetic filling are carried out correctly, as well as the definitive sealing of the coronary access.