Intraoral maxillary quadrangular Le Fort II osteotomy: a long-term follow-up study.

Purpose: This study evaluated the clinical outcome and skeletal stability of the intraoral maxillary quadrangular Le Fort II osteotomy (IQLO) with wire or rigid internal fixation following horizontal maxillary advancement.

Patients And Methods: All 21 patients who had undergone the IQLO were analyzed for operation time, blood loss, length of hospitalization, intraoperative and postoperative complications, and radiographic abnormalities. Lateral cephalometric radiographs were taken preoperatively (T1), postoperatively (T2) and late postoperatively (T3) to analyze skeletal movement.