Inclusion Criteria:  Patients should be free of any relevant systemic diseases. Patients with recent oroantral communication (O.A.C) (24:72) hours . Good oral hygiene  Exclusion Criteria:  An immune compromised state. Previous sinus disease. History of sinus surgery. Presence of intra-antral foreign bodies and need for cold well-luc procedure. Presence of intra-sinus pathology