Cierre de una fístula oroantral usando cemento óseo y un colgajo de mucosa yugal

the oroantral fistula is a solution of pathological continuity between the maxillary sinus and the oral cavity, frequently produced after a teeth extraction in most of cases of the first or second molars. the commonest symptom provoked is an acute sinusitis evolving to chronicity if the fistula remains. the diagnosis is made by transalveolar, orthopantography or dental computerized tomography. its surgical closure is necessary when the fistula has more than 3 mm or not seal by itself in three weeks. for it, there are some techniques using different materials and flaps where its objective is to occlude the bone defect as well as the mucous one thus solving the fistula and the sinus problem.