Efficacy of Buccal Pad of Fat, Advanced Platelet Rich Fibrin, Fibrin Glue and Oxidized Cellulose Plug in Management of Oro-Antral Communication, Comparative Clinical Study

Inclusion Criteria: * patients suffering from oroantral communications * patients suffering from oroantral fistula. * The Diameter of the opening ranged from 4-9 mm, * communication resulted from recent extraction, * foreign body; or * cyst enucleation Exclusion Criteria: Patients suffering from any systemic diseases were excluded from the study. * diabetes, * autoimmune diseases, * cancers, * nephropathy, * coagulation disorders