Home-based Under Mattress Monitor for OSA

Inclusion Criteria: * Diagnosis of Obstructive Sleep Apnea demonstrated with a sleep study polysomnography or home sleep study (PSG or HSAT), manually scored by a sleep physician according to the 2017 American Academy of Sleep medicine scoring guidelines. * Willingness to commute to the OFP clinic every 2 weeks during MAD titration period. * Consent to partake in the study. Exclusion Criteria: * Diagnosis of central or mixed sleep apnea. * Neurocognitive disease. * Concomitant therapy with PAP therapy. * Allergic to the appliance material (Polyamide 12). * Presence of active dental decay, ill-fitting dental restorations, or crown to root ratio unfavorable. * Inadequate English language comprehension. * Lack of coordination or dexterity to insert/remove the MAD intraorally. * Inability to tolerate digital dental impressions. * Patients with concomitant diagnosed sleep disorders, including narcolepsy, restless leg syndrome, rapid eye movement sleep behavior disorder).