title: ORO-ANTRAL FISTULA. A ONE STAGE CLOSURE: FURTER REPORT.
mesh_terms: D005402:Fistula; D006801:Humans; D008443:Maxillary Sinus; D010482:Periapical Abscess; D012852:Sinusitis; D013515:Surgery, Oral
keywords: MAXILLARY SINUS; PERIAPICAL ABSCESS; SINUSITIS; SURGERY, ORAL