A custom fit. A carefully chosen jaw position. A plan to check the result.
An oral appliance supports your lower jaw forward while you sleep, helping create room for breathing. Here’s what happens—and why the care around the device matters.
See how it works
During sleep, the tongue and other soft tissues can narrow or block the upper airway. In obstructive sleep apnea, this repeatedly limits or interrupts breathing. [1]
A mandibular advancement appliance holds the lower jaw in a forward position. This can bring the tongue and connected tissues forward and help keep the airway open. It does not push air into your lungs. [2]
With an appliance: supporting the lower jaw forward can help reduce airway collapse during sleep.
The best setting is individual. Moving the jaw farther forward is not always better; adjustment balances comfort and breathing response. [3]
You may hear the terms oral appliance therapy (OAT) or mandibular advancement device (MAD). Here, we’re describing a custom, adjustable device that fits over both dental arches.
A sports guard or grinding guard has a different purpose. Protecting teeth does not establish that a device treats sleep apnea. Clinical guidance favors a custom, adjustable appliance over a non-custom device when oral appliance therapy is prescribed. [4]
Explore the appliances we provideScans or impressions and a bite record guide fabrication. The examination considers your teeth, gums, restorations, jaw joints, and range of movement. [3]
Dr. DeSaix works with multiple appliance types. Your clinical needs, comfort, preferences, and coverage requirements inform the choice together—not a single device for every patient.
After delivery, the jaw position is refined over time. Follow the adjustment plan your dental sleep team gives you; appliance mechanisms and individual needs differ. [3]
Your sleep study and health history help your care team decide whether an appliance is appropriate. Snoring by itself cannot tell you whether you have sleep apnea.
An appliance may be considered for adults who cannot tolerate CPAP or prefer another treatment. Severity, oxygen levels, dental health, and treatment response all matter. CPAP generally reduces breathing events and improves oxygen levels more effectively; severe OSA needs particular care in selecting an alternative. [4]
An appliance can also be an option for primary snoring, after a medical evaluation rules out OSA. The pathway starts with understanding the cause, not choosing a device based on the sound of snoring alone. [4]
Explore snoring treatmentAn appliance and PAP may be used together when your care team recommends combined therapy. Read about combined sleep apnea therapy. [3]
Less snoring or more energy is encouraging, but neither proves that OSA is controlled. Follow-up sleep testing with the appliance helps your medical provider assess effectiveness. [4]
Bring your sleep study and current treatment information. Your evaluation connects the sleep diagnosis with your dental health and goals.
Your team checks the appliance fit and teaches you how to insert, remove, clean, and adjust your specific device.
Comfort and symptoms guide adjustments. Your medical provider then evaluates the treatment response, including appropriate sleep testing.
Follow-up reviews your bite, teeth, jaw comfort, appliance condition, and symptoms. Changes may call for new testing or a different plan. [3]
The device is compact, quiet, and needs no electricity when used on its own. It works while it is worn; it is not a permanent cure. Consistent nightly use and follow-up are part of treatment. [5]
Use the cleaning and storage instructions for your appliance. Keep regular dental care, and let the team know about new dental work or a change in how the appliance fits.
Understand insurance and treatment costsPossible effects include jaw or tooth soreness, irritation, excess saliva or dry mouth, and changes in the way your teeth meet. Some bite or tooth-position changes can persist. [6]
Tell your dental sleep team about pain, a changing bite, loose dental work, or a damaged appliance. They can evaluate the problem and discuss adjustments or alternatives. Morning exercises or a bite guide may be recommended for your situation. [7]
There is no single timetable. Fit, comfort, the adjustment process, and follow-up testing determine the next steps. Your team will give you a plan rather than a promise of results by a certain date.
Do not change or stop prescribed therapy on your own. Ask your treating medical provider how to manage treatment while your appliance is being fitted, adjusted, and evaluated.
A brand name cannot predict your response. Dr. DeSaix helps you select an appropriate appliance and then monitors how you do with it. See the designs available at RespAir Sleep.
Patient education informed by NIH resources and professional guidance. Researched October 2026.
Bring your questions, your sleep study, or simply your story. We’ll help you understand where to start.