title: Three-dimensional changes in upper airways of patients with obstructive sleep apnea following maxillomandibular advancement.
abstract: OBJECTIVE
  The purpose of this study was to analyze the morphologic changes of the airway in obstructive sleep apnea (OSA) patients by helical computed tomography (CT) scanning following maxillomandibular advancement (MMA) surgery.
  
  
  METHODS
  Twenty consecutive OSA patients treated with MMA from 2000 to 2003 at the University of Alabama at Birmingham Hospital and diagnosed by polysomnography (PSG) were included in this study. The criteria for this study were MMA surgery, pre- and postoperative helical CT scan, and PSG. Lateral (LAT) and anterioposterior (AP) airway dimensions were measured from the level of the hard palate to the hyoid using helical CT scans.
  
  
  RESULTS
  There was enlargement of LAT and AP diameters for all patients at all levels. LAT dimensions were enhanced greater than AP in the retroglossal region.
  
  
  CONCLUSIONS
  MMA results in significant increase in both AP and LAT airway dimensions.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, USA. drf@uofsdocs.com
authors.forename: S Craig
authors.initials: SC
authors.lastname: Fairburn
authors.forename: Peter D
authors.initials: PD
authors.lastname: Waite
authors.forename: George
authors.initials: G
authors.lastname: Vilos
authors.forename: Susan M
authors.initials: SM
authors.lastname: Harding
authors.forename: Wanda
authors.initials: W
authors.lastname: Bernreuter
authors.forename: Joel
authors.initials: J
authors.lastname: Cure
authors.forename: Sai
authors.initials: S
authors.lastname: Cherala
mesh_terms: D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006928:Hyoid Bone / Q000000981:diagnostic imaging; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D019186:Mandibular Advancement / Q000379:methods*; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods; D019340:Osteotomy, Le Fort; D010100:Oxygen / Q000097:blood; D021362:Palate, Hard / Q000000981:diagnostic imaging; D010160:Palate, Soft / Q000000981:diagnostic imaging; D010614:Pharynx / Q000000981:diagnostic imaging*; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000097:blood / Q000145:classification / Q000601:surgery*; D036542:Tomography, Spiral Computed
chemical_list: D010100:Oxygen