Dual Obstructive Sleep Apnea Therapy (DOT Trial)

Continuous positive airway pressure (CPAP) is considered the gold standard therapy for obstructive sleep apnea (OSA). However, CPAP users sometimes experience pressure-related discomfort. It is thought that lower CPAP pressure may increase comfort and lead to greater treatment adherence. Mandibular advancement splint (MAS) therapy has been shown to be the preferred OSA treatment option among patients. However, MAS therapy is only partially effective in some OSA patients, especially in severe cases. It is thought that a combination of MAS and PAP therapy may benefit patients in which MAS alone is only partially effective. Using MAS and PAP at the same time is called "Dual Therapy". Dual Therapy may allow a lower CPAP pressure to be applied, which may increase patient comfort and therefore increase treatment adherence and overall effectiveness. This study will evaluate the effectiveness of 1 month of Dual Therapy in 30 OSA patients.