title: Maxillary Advancement for Unilateral Crossbite in a Patient with Sleep Apnea Syndrome.
abstract: This article reports the case of a 44-year-old male with skeletal Class III, Angle Class III malocclusion and unilateral crossbite with concerns about obstructive sleep apnea syndrome (OSAS), esthetics and functional problems. To correct the skeletal deformities, the maxilla was anteriorly repositioned by employing LeFort I osteotomy following pre-surgical orthodontic treatment, because a mandibular setback might induce disordered breathing and cause OSAS. After active treatment for 13 months, satisfactory occlusion was achieved and an acceptable facial and oral profile was obtained. In addition, the apnea hypopnea index (AHI) decreased from 18.8 preoperatively to 10.6 postoperatively. Furthermore, after a follow-up period of 7 months, the AHI again significantly decreased from 10.6 to 6.2. In conclusion, surgical advancement of the maxilla using LeFort I osteotomy has proven to be useful in patients with this kind of skeletal malocclusion, while preventing a worsening of the OSAS.
authors.affiliation: Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Hoshijima
authors.forename: Tadashi
authors.initials: T
authors.lastname: Honjo
authors.forename: Norifumi
authors.initials: N
authors.lastname: Moritani
authors.forename: Seiji
authors.initials: S
authors.lastname: Iida
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamashiro
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kamioka
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000601:surgery*; D008437:Maxilla / Q000601:surgery*; D012891:Sleep Apnea Syndromes / Q000601:surgery*