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Clinical efficacy of prosthetic mandibular advancement on obstructive sleep apnea syndrome

In order to clarify the efficacy and indication of prosthetic mandibular advancement (PMA) on obstructive sleep apnea syndrome (OSAS), we made a comparison of both the polysomnographic findings and the upper airway configuration between before and during PMA on 19 OSAS patients. During PMA, there was a significant decreased apnea hypopnea index compared to before treatment. The changes in magnetic resonance imaging of the upper airway during sleep with PMA indicated that the treatment is regarded to be the first choice for OSAS patients with glossopharyngeal obstruction. In addition to that, the treatment might be considered for use in velopharyngeal obstruction.