From a medical point of view, CPAP is the only treatment for snoring and sleep apnea, especially with other health problems such as heart disease. It is the only 100% treatment option with no side effects. However, only about half of people who try CPAP can tolerate it. The more tired someone is and the more severe the diagnosis of sleep apnea is, the greater the chance of CPAP compliance because the benefits can be huge and often felt after only one night using CPAP. Other treatments, such as a dental device, are usually better suited to those with less severe sleep apnea (eg >90% SaO2), who are not as tired and who have jaw pain issues that need treating with a dental device.