Sleep Apnea Treatment (IMAGE) American Thoracic Society Caption For some types of sleep apnea, an oral appliance may be an effective first line treatment, in addition to CPAP. Credit ATS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.