OSA is a disorder characterized by pauses in breathing and daytime sleepiness. There are certain characteristics which increases ones risk of developing OSA, including being overweight and obese, having a narrow upper airway, having an overbite, having a large neck size or a deep set chin. Now a recent study of men in China shows that the soft palate is longer and the tongue base is pushed further back in patients with severe OSA. It was also revealed that more body weight, a longer face and head posture are significant predictors of the severity of OSA.

Angle Orthod 2006; 76(6);962-9

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