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KMID : 0361920080380030202
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Korean Journal of Orthodontics
2008 Volume.38 No. 3 p.202 ~ p.213
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Cephalometric differences in obstructive sleep apnea between obese and non-obese Korean male patients
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Hwang Sang-Hee
Ahn Byung-Hoon
Cho Yong-Won
Kim Jong-Bae
Nam Ki-Young
Park Hyo-Sang
Park In-Suk
Park Shin-Goo
Suh Young-Sung
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Abstract
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Objective: The purpose of this study was to compare the cephalometric measurements of obese and non-obese Korean male patients with obstructive sleep apnea syndrome (OSA).
Methods: Eighty-seven adults who had visited the Sleep Disorder Clinic Center in Keimyung University, Daegu, Korea were examined and evaluated with polysomnography (PSG) and lateral cephalogram. They were divided into 4 groups (non-obese simple snorers, obese simple snorers, non-obese OSA patients, obese OSA patients) according to AHI (Apnea-Hypopnea Index) and BMI (Body Mass Index).
Results: The obese OSA group had the highest AHI among the 4 groups. The non-obese OSA group had a significantly steeper mandibular angle and shorter tongue length than the obese OSA group. The hyoid bone of the obese OSA group was positioned anterior and inferior as compared with the non-obese OSA group. Multiple regression analysis showed that tongue length in the obese OSA group and retroposition of hyoid bone in the non-obese OSA group were significant determinants for the severity of AHI.
Conclusions: From a cephalometric point of view, the obese and non-obese pateints with OSA may be characterized by different pathogeneses. Therefore, they have to be managed by individualized treatment. For the obese OSA patients, weight control must be advised as a first choice and for the non-obese OSA patients, oral appliance, nasal CPAP, UPPP and others could be chosen according to the obstructive sites. (Korean J Orthod 2008;38(3):202-213)
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KEYWORD
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BMI, OSA, Lateralcephalogram, Individualizedtreatment
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