Treatment Option Walled Lake, MI Dentist An oral appliance is an effective treatment option for OSA. Wearing an oral appliance while you sleep can greatly reduce the risk of any comorbidities associated with sleep apnea. An oral appliance is similar to a mouth guard or retainer, however, the oral appliance that is custom made for you is designed to effectively hold your jaw in a specific position to increase airflow while you sleep, greatly reducing the effects of sleep apnea.