If you have obstructive sleep apnea, the most useful comparison is more than device size or convenience. The treatment has to control breathing during sleep, and you need to be able to use it consistently. CPAP and custom oral appliance therapy address the airway in different ways. Your medical provider can help weigh both for your diagnosis and health history.
How well does each treatment control breathing?
CPAP delivers air pressure through a mask to keep the airway open. On sleep studies, CPAP generally reduces breathing interruptions and improves oxygen levels more than oral appliance therapy. CPAP can be a strong option, particularly when more complete control of breathing events is needed. Your medical provider can help determine which treatment fits your health needs and which you can use consistently.1
A custom oral appliance fits over the teeth and holds the lower jaw forward during sleep. It can significantly reduce sleep-disordered breathing for an appropriate adult, although the response varies. It should be adjusted and its effect checked with appropriate follow-up testing; less snoring or less sleepiness alone does not prove adequate control.1
What about comfort and nightly use?
CPAP involves a mask, hose, and powered machine. Some people use it comfortably and get excellent results; others have trouble with mask fit, pressure, dry mouth, or keeping it on through the night. A custom oral appliance is mask-free, quiet, portable, and does not need electricity during use.
The AASM/AADSM guideline found that oral appliance adherence may be higher than CPAP adherence in the evidence it reviewed. Much of the older oral appliance data relied on patient reports, while CPAP use could be measured by the machine. A more recent AASM review notes that oral appliances do not necessarily maintain better adherence at one year from prescription. Individual comfort and actual use matter more than a single advertised percentage.12
Who might consider an oral appliance?
Professional guidance supports considering a custom, titratable oral appliance for adults with diagnosed OSA who cannot tolerate CPAP or prefer an alternative after discussing treatment with their medical provider. The dental evaluation also matters: teeth, gums, bite, jaw joints, and the ability to tolerate the device affect candidacy. Oral appliance therapy is not right for everyone.1
If CPAP is working well for you, there may be no reason to switch. If it is not working for you, talk with your sleep clinician about mask or pressure adjustments and whether another treatment pathway is appropriate. Do not stop prescribed therapy without a plan.
What follow-up does an oral appliance require?
Dr. Dawson evaluates the dental component, selects and fits a custom appliance for an appropriate patient, and adjusts it gradually. Follow-up dental visits monitor comfort, teeth, bite, and jaw joints. Your medical team remains responsible for diagnosis and medical management, including an appropriate objective assessment of how well treatment controls OSA after titration.1
Compare your options with your care team
Already have a sleep study? Bring it to the discussion. If you have not been tested, we can help you understand the next medical step. Explore options when CPAP is difficult, see whether an oral appliance may be right for you, or read about getting started and medical insurance questions.
Request a consultation with Restful Sleep Center in Peoria, or call (623) 566-1310.
Sources
- American Academy of Sleep Medicine and American Academy of Dental Sleep Medicine. Joint clinical practice guideline summary (2015).
- American Academy of Sleep Medicine Emerging Technology Committee. Technological advances in mandibular advancement devices (2025).
This is general patient education. Treatment decisions require individual medical and dental evaluation.