Abstract
PurposeLe Fort I osteotomy combined with horseshoe osteotomy has been established as a technique for total maxillary setback. In this study, the stability of the maxillary and mandibular positions was examined in five cases in which was performed total maxillary setback by Le Fort I osteotomy combined with horseshoe osteotomy. Subjects and methodsThe stability of the maxilla was examined in five cases that had undergone total maxillary setback by horseshoe Le Fort I (H- LF I) osteotomy and bilateral sagittal split osteotomy (BSSO) including mandibular anterior subapical osteotomy (MASO) in one case. The changes in the position of the maxillary and mandibular positions were analyzed with lateral cephalograms taken immediately before (T0), a few days after (T1), and one year after (T2) the surgery. ResultsPostoperative maxillary changes both horizontally and vertically were all less than 2 mm. Postoperative horizontal mandibular changes showed little skeletal relapse, but all postoperative vertical mandibular changes were within 2 mm. ConclusionOur results suggest that H-LF I osteotomy is a reliable, safe, and effective surgical procedure for postoperative skeletal stability of total maxillary setback in skeletal class II cases.
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