Tratamento cirúrgico de Fístula Bucossínusal com Fibrina rica em plaquetas e leucócitos: relato de caso

Abstract

Oroantral fistula is a common pathological occurrence characterized by the communication of the maxillary sinus with the buccal cavity mainly after the dental extractions of posterior superior elements whose roots have an intimate relation with the maxillary sinus. Several surgical techniques are used for the closure of oroantral fistula and their choice should be based on the size of the communication in the local tissue conditions and the skill of the dentist surgeon. Treatment should be made as early as possible, avoiding infection of the sinus and the rise of a maxillary sinusitis. This case report aims to describe a minimally invasive alternative surgical technique for the closure of oroantral fistula using platelet-rich fibrin and leukocytes (L-PRF). For this, the authors present the case of a patient with oroantral fistula pos-surgery of the second superior molar. Surgical treatment of the oroantral fistula with L-PRF presented satisfactory results, with complete closure of the fistula and bone formation after 2 years of follow-up. The advantages observed were a rapid epithelial closure of the mucosa, protection of the depth of the sulcus and less postoperative pain and swelling. They are needed randomized clinical studies evaluating different techniques to confirm the benefits found.