Surgical technique for the correction of postpalatoplasty fistulae of the hard palate.

Postpalatoplasty fistulas of the hard palate remain challenging. The reported recurrence rate after surgical correction ranges between 33 and 37 percent. The authors describe a surgical technique for the correction of postpalatoplasty fistulas by total elevation of the palatal gingivoperiosteum starting at the dental sulcus, excision of the fistula, and watertight separate closure of the nasal and palatal mucosa by means of the transoral approach. This technique has the advantages of providing adequate exposure for closure of the nasal mucosal gap and allowing closure of the palatal defect under minimal tension. Placement of interdental sutures leaves no raw bone surfaces exposed. The authors have used this technique on 60 consecutive patients with fistulas of the primary and secondary hard palate between 1998 and 2003. Their overall success rate of fistula closure was 90 percent. The success rate for previously unoperated postpalatoplasty fistulas was 96.9 percent. All of the failures occurred in patients who had bilateral cleft lip and palate. No complications of tooth loss or gingival recession were observed. A detailed description of the technique with illustrations is provided.