Oral appliance therapy for snoring and sleep apnea

How does a mandibular advancement device work?

The appliance fits over the teeth and holds the lower jaw in a forward position to help keep the upper airway open during sleep. It may be called a mandibular advancement device, a mandibular repositioning appliance or a sleep apnea oral appliance.

A night guard intended for tooth grinding has a different purpose. Two devices worn in the mouth at night do not necessarily treat the same problem.

Sources: NHLBI: Treatment · FDA intraoral-device special-controls guidance

Who can assess whether it is suitable?

An in-person examination by a qualified dentist assesses the teeth, gums, bite and jaw function. A medical provider evaluates suspected sleep apnea and establishes the diagnosis. If you already have OSA, the appliance should fit into your overall treatment plan.

An offer of an appliance should include assessment and follow-up. Ask who is involved and what happens if the evaluation shows that this is not an appropriate option.

Sources: AADSM updated standards, April 2025 · AADSM patient fact sheet

From assessment to follow-up

The number of appointments and adjustments varies. The steps below describe the process, not a guaranteed schedule.

1. 01

   Clarify the need

   Discuss symptoms, previous testing and the treatment goal with the medical and dental team.

2. 02

   Examine and fit

   The dentist assesses the mouth and obtains the measurements or impressions needed for a custom appliance.

3. 03

   Learn to use it

   Receive instructions for wearing, cleaning, adapting to and adjusting the device according to the agreed plan.

4. 04

   Check the result

   Monitor treatment effectiveness as well as dental, bite and jaw changes.

Sources: AADSM updated standards, April 2025

A custom appliance and a store-bought product are different choices

Custom treatment combines examination, fitting and monitoring. A prefabricated or boil-and-bite product may not provide that process. The distinction involves supervision and suitability, not only materials and price.

FDA guidance distinguishes prescription devices from products specifically cleared for over-the-counter use. Check the exact device’s intended use. No appliance should be described as risk-free.

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Sources: FDA intraoral-device special-controls guidance · AADSM updated standards, April 2025

How will you know whether it helps?

For OSA, clinical guidance supports follow-up sleep testing to assess response to oral appliance treatment. Less noise, better sleep and greater comfort are useful observations, but they are not the whole assessment.

Agree on follow-up before starting. Contact the team if symptoms return, the appliance no longer fits or you notice dental, bite or jaw changes.

Sources: AASM longitudinal testing guidance, 2021 · AADSM updated standards, April 2025

Ask about assessment, training and coordination

Ask who evaluates suitability, fits the device and checks the teeth, bite and experience of use. The responsibility for medical assessment and checking OSA treatment effectiveness should also be clear.

Ask how the dentist and prescribing clinician exchange relevant information. Snorehelper provides explanations and questions to take along; we do not arrange appointments or refer patients to particular practices.

Sources: AADSM patient fact sheet

Both breathing and dental health need attention

The appliance sits in the mouth, but its intended effect concerns the airway during sleep. A dental examination and sleep evaluation therefore answer different questions. Healthy teeth alone do not prove that an appliance will treat a breathing disorder; a sleep apnea diagnosis alone does not establish dental suitability.

Ask whether the practice only makes and fits the appliance or also coordinates testing and effectiveness checks. Both arrangements can occur, but you should understand who is responsible.

Provide previous test results and treatment information as the clinic requests. Ask the dentist what the assessment is based on and what needs to be resolved before fabrication.

Sources: AADSM updated standards, April 2025

Adaptation and adjustment are part of treatment

The process does not end when you collect the appliance. Fit, comfort and the intended effect need review over time. Ask for written instructions and a clear way to contact the practice.

A titratable appliance can change how far forward the jaw is held. More advancement is not automatically better. Follow the individual plan; this guide does not give instructions for setting a device yourself.

Describe soreness, saliva changes or an altered bite to the dentist. Note when it happens, how long it lasts and whether eating or wearing the device is difficult. Persistent problems deserve assessment.

Sources: AADSM side-effect consensus, 2017

Questions after you receive the appliance

Keep the device name, instructions and follow-up plan. Ask what to do if it is damaged, lost or no longer fits, including after dental treatment.

Find out how future visits are scheduled and who checks dental health and treatment effectiveness. An agreed contact plan is more useful than a general instruction to seek help if needed.