[Mandibular advancement devices assisted UPPP for treatment of obstructive sleep apnea and hypopnea syndrome].
OBJECTIVE
The purpose of this study is to investigate the mechanics of mandibular advancement devices (MAD) assisted uvulopalatopharyngoplasty (UPPP) for treatment of obstructive sleep apnea and hypopnea syndrome (OSAHS).


METHODS
10 patients (8 males, 2 females) were diagnosed as OSAHS by PSG and operated by UPPP. Mandibular advancement devices was used after operation. One month later, all the patients were evaluated by PSG and cephalometric analysis. Paired t test and correlative analysis were carried out using SPSS 10.0 software package.


RESULTS
Cephalometric analysis indicated that MCF, angle C3-Rgn-H, Ant In Mx. Ht were significantly different before and after MAD treatment. AHI was correlative with Ant In Mx. Ht and ratio of tongue area and intermaxillary area(P<0.05).


CONCLUSIONS
MAD in patients undergoing UPPP results in changes of mandibular position, instead of changes of enlargement of velopharynx. Supported by Shanghai Leading Academic Discipline Project (Grant No.Y0203).
Zhu
Min
M
Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, College of Stomatology, School of Medicine, Shanghai Jiao Tong University, China. zminnie@yahoo.com
Lu
Xiao-feng
XF
Xu
Zhu-mei
ZM
Tang
You-sheng
YS
D002508:Cephalometry; D002681:China; D006801:Humans; D008334:Mandible; D019186:Mandibular Advancement; D010159:Palate / Q000601:surgery*; D010614:Pharynx / Q000601:surgery*; D020181:Sleep Apnea, Obstructive / Q000601:surgery*; D014609:Uvula / Q000601:surgery*