Original ArticleStability of Le Fort I Osteotomy With Propeller Graft for Canting Correction in Facial AsymmetryLee, Jae-Yeol PhD*; Kim, Yong-Il PhD†; Kang, Hee-Jea PhD‡; Song, Jae-Min PhD*; Park, Soo-Byung PhD†; Kim, Jong-Ryoul PhD§Author Information *Department of Oral and Maxillofacial Surgery †Department of Orthodontics, Pusan National University Hospital ‡Department of Oral and Maxillofacial Surgery, Barun Dental Hospital §Department of Oral and Maxillofacial Surgery, On Hospital, Busan, South Korea. Address correspondence and reprint requests to Yong-Il Kim, PhD, Department of Orthodontics, Biomedical Research Institute, Pusan National University Hospital, Dental Research Institute, Pusan National University Dental Hospital, 3–3, Beomeo, Mulgeum, Yangsan, Gyeongnam 626–770, South Korea; E-mail: [email protected] Received 14 February, 2015 Accepted 1 May, 2015 This study was supported by Pusan National University Dental Hospital grant. The authors report no conflicts of interest. Journal of Craniofacial Surgery: October 2015 - Volume 26 - Issue 7 - p 2077-2080 doi: 10.1097/SCS.0000000000001970 Buy Metrics Abstract The aim of this study was to evaluate the maxillary stability in patients who had undergone Le Fort I osteotomy with propeller graft and mandibular sagittal split ramus osteotomy for correction of maxillary asymmetry. This was a retrospective study on 15 facial asymmetry patients (7 men, 8 women: 22.2 years) requiring surgical correction at the preoperative (T0), immediately postoperative (T1) and 6 months after surgery (T2) stages. To evaluate the skeletal stability, computed tomography (CT) superimposition was used, and skeletal landmarks were measured and compared from the superimposed images according to an x, y, z coordinate system. The skeletal changes at each stage (ΔT1 − T0 and ΔT2 − T1) were compared by paired t-test (P < 0.05). The obtained data on the skeletal changes immediately postoperatively to 6-month follow-up (ΔT2 − T1) showed that the Le Fort I osteotomy with propeller graft had effected stable maxillary skeletal stability at the maxillary measurement points (posterior nasal spine (PNS ), nasopalatine canal, U3crown tip, U3root apex, and U6furcation). These results suggested that in cases of facial asymmetry where the upper tooth exposure is proper and anterior–posterior movement of the maxilla is not much required, Le Fort I osteotomy with propeller graft is an effective method for stable canting correction. © 2015 by Mutaz B. Habal, MD.