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Background and Objectives:Epithelialization of the fistula in chronic cases of oroantral fistula hinders natural healing of its opening. This requires surgical repair in most cases. We aimed to evaluate the treatment results of 12 cases managed by di-ferent surgical methods. Materials and Method:Twelve patients with oroantral fistula were managed in our hospital between :8 and their ages ranged from 27 to 63 years with the mean of 46 years. Medical records of oroantral fistula were reviewed for the evaluation of causes, treatment methods, and final outco-mes. Results:Eight fistulas developed after tooth extraction due to dental problem or sinusitis, and four fistulas originated from postoperative mucocele of the maxillary sinus. The first upper molar was most frequently involved, followed by the second premolar. One patient was cured by conservative management alone and eleven patients underwent Caldwell-Lucs operation, h the use of buccal mucosal advancement flaps resulting in successful outcomes. Conclusion:Tooth extraction and postoper-ative mucocele are the two comon causes of oroantral fistula. Caldwel-Lucs operation with fistulectomy and flap surg-ery for repairing the opening of the fistula resulted in cure without recurence. (Korean J Otolaryngol 2002;45:47-50)


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Oroantral fistula· Tooth extraction· Flap surgery· Mucocele· Maxillary sinus.