[Upper airway morphologic changes in obstructive sleep apnea hypopnea syndrome patients before and after orthognathic surgery and distraction osteogenesis].
OBJECTIVE
To investigate the morphologic changes of upper airway in obstructive sleep apnea and hypopnea syndrome (OSAHS) associated with micrognathism before and after orthognathic surgery and distraction osteogenesis, and subsequently to instruct clinical jobs effectively.


METHODS
Nine OSAHS patients associated with micrognathism (8 males, 1 female, mean age: 28.6 years) received orthognathic surgery and (or) distraction osteogenesis, and the curative effect was evaluated according to the subjective feelings and PSG. Upper airway structure before and after the treatment was measured by Somatom Sensation 16 CT scanner.


RESULTS
All 9 patients were clinically cured. The transverse length, the cross section area, and especially the sagittal length of the upper airway were obviously increased after the orthognathic surgery. The changes involved mainly in the velopharyngeal region and the laryngopharyngeal region, but not in the laryngopharyngeal region.


CONCLUSIONS
The orthognathic surgery and distraction osteogenesis can treat the OSAHS patients with microgonathism effectively by increasing their velopharyngeal and laryngopharyngeal sagittal length of upper airway.
Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Lian
L
Zhou
Xing
X
Wang
Biao
B
Yi
Lian
L
Ma
Dao-feng
DF
Ni
Zheng-yu
ZY
Jin
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008844:Micrognathism / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery*; D019857:Osteogenesis, Distraction; D010614:Pharynx / Q000000981:diagnostic imaging*; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery*; D036542:Tomography, Spiral Computed; D016896:Treatment Outcome; D055815:Young Adult