Abstract
The aim of this study is to assess maxillary transverse dimension following presurgical maxillary segmented orthodontics associated with 3-piece Le Fort 1 osteotomy in a cohort of "long face syndrome" patients with palatal constriction. Patients with maxillary transverse insufficiency were retrospectively included. They all underwent maxillary segmented orthodontics followed by a 3-piece Le Fort 1 osteotomy with palatal expansion. Palatal width dimensions were collected preoperatively, postoperatively, and at the time of the final follow-up, the stability of the expansion was analyzed. Nineteen patients were included. There was no complication. The mean postoperative expansion was 6 mm (range: 3.1-8.7mm) in the canine region and 4.3mm (range: 0-9.1mm) in the second molar region. The mean relapse was 0.36mm (range: 0-1.4mm) or 6% (range: 0%-16.1%) in the canine region and 0.17mm (range: 0-1.3mm) or 4% (range: 0%-14%) in the second molar region. Presurgical maxillary segmented orthodontics with 3-piece Le Fort 1 osteotomy has shown high stability of the maxillary transverse dimension in a 1-step surgery without dental tipping. It should be considered as an alternative to rapid palatal expansion.
Published Version
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