title: Comparison of the effects of mandibular protruding devices on obstructive sleep apnoea patients and healthy volunteers.
abstract: OBJECTIVE
  To evaluate upper airway diameter differences before and after placement of custom made mandible protruding devices (MPD) in OSAS group and to compare with control group using computerized tomography.
  
  
  METHODS
  The OSAS group was composed of 15 patients aged from 25 to 45 years with mild-moderate OSAS and the control group included 15 healthy volunteers, aged from 25 years to 44 years. On coronal and sagittal reformated CT images, anteroposterior (AP) and lateral (LAT) diameters at three levels (passing through soft palate [level 1], 5 mm above uvula [level 2] and 1 cm above the tip of epiglottis [level 3]) were measured before and after MPD placement in both groups.
  
  
  RESULTS
  LAT diameters at level 1, level 2 and AP diameter at level 2 in OSAS group were significantly lower than in control group before MPD placement. Only LAT diameters at level 2 in OSAS group were significantly lower than in control group after MPD placement. When we compared upper airway diameters before and after placement of the MPD within each group, statistically significant increase in diameters at all levels were observed.
  
  
  CONCLUSIONS
  MPD is a cheap, easily usable device providing increase in upper airway diameters.
authors: Yunus Emre State Hospital, ENT Department, Eskisehir, Turkey.
authors: Mustafa
authors: M
authors: Acar
authors: Eskisehir Osmangazi University, Medical Faculty, Department of Radiology, Eskisehir, Turkey.
authors: Suzan
authors: S
authors: Saylisoy
authors: Istanbul Medeniyet University, ENT Department, Istanbul, Turkey.
authors: Turhan
authors: T
authors: San
authors: Eskisehir Osmangazi University, Medical Faculty, Department of Otorhinolaryngology, Eskisehir, Turkey. Electronic address: irem.turkcan@hotmail.com.
authors: Cemal
authors: C
authors: Cingi
authors: Dicle University, Faculty of Dentistry, Department of Orthodontics, Diyarbakir, Turkey.
authors: Yazgi
authors: Y
authors: Ay
authors: Eskisehir State Hospital, Radiology Department, Eskisehir, Turkey.
authors: Aral
authors: A
authors: Karabag
authors: Gazi University, Faculty of Dentistry, Department of Prosthodontics, Ankara, Turkey.
authors: Irem
authors: I
authors: Türkcan
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000379:methods; D004825:Epiglottis / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging; D019186:Mandibular Advancement / Q000295:instrumentation*; D008875:Middle Aged; D009305:Nasopharynx / Q000000981:diagnostic imaging; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D010160:Palate, Soft / Q000000981:diagnostic imaging; D011446:Prospective Studies; D020181:Sleep Apnea, Obstructive / Q000628:therapy*; D012913:Snoring / Q000628:therapy; D014057:Tomography, X-Ray Computed / Q000379:methods; D014059:Tongue / Q000000981:diagnostic imaging; D014609:Uvula / Q000000981:diagnostic imaging
keywords: Computerized tomography; Mandibular protruding device; Obstructive sleep apnoea