Treatment of recurrent oro antral fistula in left maxillary posterior region: a secondary repair procedure with buccal fat pad advancement technique

Abstract

There are many causes of fistulas that involve the nasal and antral cavities or both. They may result from pathological entities or secondary to removal of tumours or maxillary cyst. However extraction of maxillary molar or premolars is most common cause of oro- antral fistula. This is explained by close relationship between apex of these teeth and the thinness of antral floor. When the primary fistula repair fails to heal spontaneously during 1st three weeks after surgery, a secondary repair may be indicated. During treatment process of the fistulas, there are procedures to make a direct close or the use of sliding mucosal flap, all techniques allow an equal and high degree of failure.