Mandibular Advancement Device and Changes in Nocturia

The efficacy of the device will be evaluated in regards to the response of nocturia. Once patients report an average of voiding per night of less than 2 in the preceding 2 weeks of the follow up they will be classified as responders in term of nocturia and will be evaluated with a second sleep study. Efficacy of MAD will be assessed by comparing the apnea hypopnea index (AHI) values of pre and post sleep study with MAD, and they will be classified as responders if they have 50% improvement in AHI.