title: Assessment of nasal septum after Le Fort I osteotomy with computer tomography.
abstract: The purpose of this study was to evaluate the effects of Le Fort I osteotomy on nasal septum deviation and differences in left and right airway sizes, and to determine whether the nasal septum was affected by differences in the direction of movement. Forty patients underwent conventional Le Fort I osteotomy, and computed tomography (CT) was performed preoperatively, and 1 week and 1 year postoperatively. The nasal septum angle and airway area were measured at the anterior, middle, and posterior positions on the CT images Patients were divided into 2 groups depending on each difference in movement (impaction ≥5 mm or other; anterior movement or other; and impaction asymmetry or other). There were no significant differences in the nasal septum angle and the airway of all patients. Among the patient groups, there were no significant differences in the nasal septum angle and airway. We concluded that conventional LI osteotomy did not influence the nasal septum deviation or the left and right airway asymmetry. Differences in the method of moving the maxilla have not been shown to affect changes in the nasal septum.
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan. Electronic address: amoroi@yamanashi.ac.jp.
authors.forename: Akinori
authors.initials: A
authors.lastname: Moroi
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Kunio
authors.initials: K
authors.lastname: Yoshizawa
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Tsutsui
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Yuriko
authors.initials: Y
authors.lastname: Saida
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Asami
authors.initials: A
authors.lastname: Hotta
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Fukaya
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Ryota
authors.initials: R
authors.lastname: Hiraide
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Takayama
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Tunoda
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Saito
authors.affiliation: Department of Oral & Maxillofacial Surgery (Chief: Prof. Koichiro Ueki, DDS, PhD), Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Ueki
mesh_terms: D020341:Absorbable Implants; D000293:Adolescent; D000328:Adult; D001860:Bone Plates; D001863:Bone Screws; D005260:Female; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D009300:Nasal Septum / Q000000981:diagnostic imaging* / Q000601:surgery*; D019340:Osteotomy, Le Fort; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
keywords: Computer tomography; Le Fort I osteotomy; Nasal septum