TRATAMIENTO DE LA PERIODONTITIS APICAL PERSISTENTE EN UN INCISIVO LATERAL SUPERIOR DERECHO MEDIANTE CIRUGÍA PERIAPICAL, REGENERACIÓN ÓSEA CON BIOMATERIAL DE ORIGEN BOVINO Y FIBRINA RICA EN PLAQUETAS. RELATO DE CASO: Treatment of persistent apical periodontitis in a right upper lateral incisor through periapical surgery, bone regeneration with bovine origin biomaterial and platelet-rich fibrin. Case report. RSOS FOUNC [Internet]. 2023 Oct. 31 [cited 2025 Dec. 5];4(1). Available from: https://revistas.unc.edu.py/index.php/founc/article/view/118