This is an interventional study in which 12 patients receive MAS therapy for comorbid TMD/OSA for 16 weeks. It is standard of care to treat mild or moderate OSA with MAS therapy, the the effect on MAS therapy on TMD pain in people with OSA is unknown. There is no comparison group. Care is being provided under the direction of a sleep physician by a dentist who specializes in dental sleep medicine. The investigators expect that as MAS therapy reduces the severity of OSA, painful TMD symptoms will also reduce.