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Introduction: Oroantral communication (OAC) is a common complication following extraction of maxillary posterior teeth because of the close anatomic proximity of the roots to the maxillary sinus. Aim of study: Evaluation of Buccal Pad of Fat versus Leukocyte Platelet Rich Fibrin (L-PRF) in the management of oroantral communication. Materials and Methods:This study was carried out on 12 patients with oroantral communication. They were divided into 2 groups, 6 patients in each. In Group I, the patients were treated with buccal fat pad technique. While in group II, the patients were managed with L-PRF technique for OAC closure.Patients were followed up for 1,3,5,7 days post-operative then weekly for 4 weeks.Results: There was significant difference between the two groups regarding pain, and swelling however, no significant difference between both groups regarding infection during different follow up periods. No recurrence for the oroantral communication was observed in all patients of both groups after 4 weeks postoperatively. Conclusion:The goal of closing an oroantral communications is separation of the oral cavity from the maxillary sinus and to prevent infection of the maxillary sinus.

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