Discussion
OSA
The objectives of this study were to compare the effects of MAD therapy on upper airway dimensions between responders and non-responders with mild to moderate OSA, and to determine the correlations between the changes in upper airway dimensions and the changes in AHI in the total group. The results indicated that the changes of the upper airway dimensions with MAD in situ were not significantly different between responders and non-responders in the supine position. Furthermore, the changes of the upper airway dimensions had no significant correlation with the changes in AHI.