Oroantral fistulae (OAF) are surgical sequelae that require complete resection and often leave large defects for the surgeon to repair. Closing these lesions is often technique sensitive and requires a detailed protocol, which, if not adhered to, can lead to recurrence. This case report presents a combined approach to closing an OAF by first excising the fistula and then resecting to retrieve the buccal fat pad to form a pedicle graft over the wound site. Next, a platelet-rich fibrin membrane is sandwiched over the buccal fat pad and completely covered by a buccal advancement flap. This triple-layered technique is a novel method to close a chronic OAF. Palabras clave: buccal advancement flap, buccal fat pad, maxillary sinus, oroantral fistula, platelet-rich-fibrin