Direct answer: A custom oral appliance for sleep apnea holds your lower jaw slightly forward during sleep to keep the airway open. After a physician’s diagnosis, it’s an option for adults who can’t tolerate CPAP or prefer another treatment, including severe cases where CPAP failed, with a follow-up sleep test to confirm it works.
TL;DR
- A custom oral appliance holds the lower jaw forward, which moves the tongue forward and keeps the airway open during sleep [1][2].
- A sleep physician diagnoses sleep apnea first, with an in-lab sleep study or a home sleep apnea test. Then a dentist fits the appliance [2].
- Severe sleep apnea doesn’t automatically rule one out. CPAP comes first, and an appliance is reserved for severe cases where CPAP didn’t help or couldn’t be tolerated [1].
- The guideline prefers a custom, titratable appliance over over-the-counter devices [1].
- Most side effects are dental and mild, such as extra saliva, dry mouth, and sore teeth. Bite changes can become permanent, so regular checks matter [1][2].
- A follow-up sleep test confirms the appliance works, and checkups continue every 6 months in year one, then yearly [1][4].
Get diagnosed, choose a custom adjustable appliance from a trained dentist, and confirm it works with a follow-up sleep test.
Key numbers
| Stat | Value | Source |
|---|---|---|
| Mean AHI reduction with oral appliances vs no appliance, 34 RCTs, 1,301 patients | 13.6 events per hour | [1] 2015 |
| RCTs reporting more than 50% AHI reduction with oral appliances | 25 of 34 | [1] 2015 |
| Additional mean AHI reduction with CPAP vs oral appliances, 15 RCTs | 6.24 events per hour | [1] 2015 |
| Severe OSA patients effectively treated after repeated sleep studies and adjustment, one trial | 69.2% | [1] 2015 |
| Non-severe OSA patients effectively treated in the same trial | 84.0% | [1] 2015 |
| Change in overbite and overjet after two years of appliance use, one study | About 1.2 mm and 1.5 mm | [1] 2015 |
| Extra self-reported hours per night of appliance use vs recorded CPAP use | 0.70 hours | [1] 2015 |
| First follow-up check after getting the appliance | Within 30 days | [4] 2025 |
| Follow-up visit frequency in year one, then after | Every 6 months, then at least yearly | [4] 2025 |
| Americans with a sleep disorder | About 50 to 70 million | [3] 2025 |
A custom oral appliance for sleep apnea is a small mouthpiece that holds your lower jaw slightly forward while you sleep. That shift keeps the airway at the back of your throat open, so air keeps moving through the night [1][2]. Sleep physicians can prescribe one for adults with obstructive sleep apnea who can’t tolerate CPAP or would prefer another treatment [1].
It’s quiet, it fits in a pocket, and it needs no power cord. It can also cut down snoring, which a bed partner often notices first [1]. It works best with the right patient, fit, and follow-up. Below, you’ll see how the appliance works and who tends to do well with one. You’ll also learn what side effects to expect, and why a sleep physician’s diagnosis comes first.
How an Oral Appliance Treats Sleep Apnea
In short: A custom appliance holds the lower jaw forward so the airway stays open, and it can be adjusted in small steps.
An oral appliance treats sleep apnea by holding your lower jaw forward while you sleep. The tongue is attached to the jaw, so the base of the tongue moves forward too. That opens more room in the upper airway, which makes it less likely to narrow or close during sleep [1][2].
In obstructive sleep apnea, the upper airway gets blocked many times a night. The blockage can cut airflow down or stop it completely [3]. You may know the jaw thrust from a first aid class. A rescuer lifts an unconscious person’s jaw forward to open the airway. A sleep apnea oral appliance does a gentle version of that, all night long.
The Mandibular Advancement Device
The most widely used design is the mandibular advancement device, also called a mandibular repositioning device [2]. It fits over your upper and lower teeth like a sports mouth guard or a retainer. It moves the lower jaw forward and slightly down [2]. A custom device is made from impressions or digital scans of your own mouth, and it grips both arches. It isn’t a ready-made piece trimmed to fit [1].
A less common design, the tongue retaining device, holds the tongue forward instead of the jaw. The American Academy of Sleep Medicine (AASM) and the American Academy of Dental Sleep Medicine (AADSM) set the standard here in a joint 2015 guideline. That guideline found too little evidence to judge how well tongue devices work in adults [1].
Why Adjustability Matters
A titratable appliance can be moved forward in small steps. The guideline compares this to adjusting the air pressure on a CPAP machine [1]. Your dentist starts at a comfortable position and advances the jaw a little at a time. The goal is better breathing without sore teeth or a sore jaw.
That adjustability is also why testing matters later. A follow-up sleep test shows whether the current setting is doing the job or needs another adjustment [1].
Severe Sleep Apnea Does Not Automatically Rule Out an Oral Appliance
In short: Severe sleep apnea changes the order of treatment, with CPAP first, but it doesn’t automatically rule out an appliance.
Severe sleep apnea changes the order of treatment. It doesn’t automatically rule out an oral appliance [1]. You may have read that appliances are only for mild or moderate cases. The joint AASM and AADSM guideline doesn’t draw that line, and its recommendations don’t set rules by severity level [1]. The AADSM’s 2025 practice standards go a step further and list oral appliances as indicated for mild, moderate, and severe OSA [4].
What it does say about severe cases is specific:
“OA therapy should be reserved for use in severe OSA patients who did not benefit from CPAP therapy or were intolerant to CPAP.” AASM and AADSM, 2015 [1]
| OSA severity | Role of CPAP | Role of an oral appliance |
|---|---|---|
| Mild to moderate | Generally the first-line option | An option if you can’t tolerate CPAP or prefer another treatment |
| Severe | First-line or primary therapy | Reserved for patients who didn’t benefit from CPAP or couldn’t tolerate it |
So CPAP still comes first for severe OSA [1]. If it didn’t work for you, or you couldn’t keep using it, a custom appliance is a real option to raise with your sleep physician.
The tradeoff deserves a straight answer. Appliances lowered the apnea-hypopnea index (AHI), the number of breathing pauses and shallow breaths per hour, at every severity level the guideline reviewed. For moderate to severe OSA, though, patients reached their target AHI more often with CPAP [1].
In one trial the guideline reviewed, patients had repeated sleep studies and appliance adjustments. In the end, 69.2% of those with severe OSA were effectively treated, compared with 84.0% of those with milder disease [1]. That’s one study, not a promise, and it shows why the follow-up sleep test matters most in severe cases.
If CPAP hasn’t worked for you, our sleep apnea treatment page explains how Dr. Mark Musso coordinates care with sleep physicians [5].
Why a Physician’s Diagnosis Comes First
In short: A sleep physician diagnoses sleep apnea first and confirms the appliance works with a follow-up sleep test.
Sleep apnea is a medical diagnosis, so the first stop is a sleep physician. A sleep doctor confirms it with an in-lab sleep study or a home sleep apnea test, and then a dentist can fit you with an oral appliance for sleep apnea [2].
Picture two people who both snore. One buys a mouthpiece, the room gets quieter, and the breathing pauses underneath keep happening unseen. The other gets tested first and learns exactly what is going on. That’s why the AASM and AADSM guideline says a sleep physician, not a dentist, should diagnose snoring. Snoring often comes with obstructive sleep apnea, and a missed diagnosis can have serious consequences [1].
A diagnosis gives your care team three things:
- The type of apnea. An appliance helps a blocked airway, while central sleep apnea happens when the brain doesn’t send the signals needed to breathe [3].
- The severity. Mild, moderate, or severe shapes whether CPAP or an appliance comes first.
- A starting number. Your first result becomes the baseline for judging whether treatment works.
The physician’s role continues after the fitting. Feeling rested and snoring less are good signs, but the guideline says your own sense of improvement can’t set the appliance on its own. It calls for a follow-up sleep test to confirm the appliance works or to guide the next adjustment [1]. Retesting also makes sense if symptoms return or your weight changes a lot, along with regular visits to both your dentist and sleep physician [1].
Dr. Mark Musso follows that model. He doesn’t diagnose sleep apnea on his own, and he works alongside sleep physicians and ENTs once a diagnosis is in place [5].
Who Is a Good Candidate for Oral Appliance Therapy for Sleep Apnea?
In short: Good candidates have diagnosed OSA, CPAP intolerance or preference, and healthy teeth, gums, and jaw joints.
The medical side comes first. A good candidate has obstructive sleep apnea confirmed by a physician and either can’t tolerate CPAP or would rather use something else [1]. Before starting, the dentist checks that diagnosis with your medical provider [4].
The dental side matters too, because the appliance anchors to your teeth and moves your jaw. A full dental sleep exam looks at the number, location, and health of your remaining teeth, plus your gums, bite, and jaw joints [4].
| Good fit | Needs a closer look | Why it matters |
|---|---|---|
| Enough healthy teeth on top and bottom | Several missing or loose teeth, or dentures | The appliance needs solid teeth to hold the jaw in place |
| Healthy gums | Active gum disease | Gums and bone support the teeth that carry the load |
| Jaw opens and moves forward comfortably | Jaw pain, clicking, or a TMJ disorder | Studies list TMJ disorder as the most common reason an appliance isn’t advised [1] |
| No reaction to dental materials | Allergy to metals or acrylics | A trained dentist can choose other materials [1] |
| Light or no grinding | Heavy teeth grinding | The dentist can modify the appliance design [1] |
A “closer look” row means an exam question, not an automatic no.
No single trait predicts who will do best. The guideline found conflicting evidence for age, gender, body mass index, and neck size [1]. That’s one more reason the follow-up sleep test carries so much weight.
If jaw pain is part of your picture, an evaluation through our TMJ treatment service can clarify whether an oral appliance for sleep apnea makes sense for you [6].
Oral Appliance Side Effects
In short: Most side effects are dental, mild, and early; bite changes can last, so regular checks matter.
Most oral appliance side effects are dental and mild, and they tend to show up in the first few weeks. Common ones include extra saliva, dry mouth, and sore teeth or jaw muscles. A smaller group of people see longer-term changes, such as a shifted bite, which is why regular dental checkups matter [1][2].
| Side effect | When it tends to show up | How it’s handled |
|---|---|---|
| Extra saliva or dry mouth | First few weeks | Usually eases as you adjust [2] |
| Sore teeth, gums, or jaw muscles | First few weeks, or after an adjustment | Fit checks, appliance adjustments, and supportive care [1][4] |
| Stiff jaw or trouble chewing in the morning | Early on | Morning jaw exercises or a morning repositioning device [4] |
| Jaw joint pain or TMJ symptoms | Any time | Evaluation and appliance changes by your dentist and sleep team [2][4] |
| Bite changes or loose teeth | Months to years | Regular checks, and the change can become permanent [2][4] |
| Loosened fillings, crowns, or dentures | Any time | Checked and repaired at follow-up visits [4] |
Bite change sounds alarming, so here’s the scale. In one study the guideline reviewed, overbite and overjet decreased by about 1.2 mm and 1.5 mm after two years of use [1]. The shift is small, but it can last, so your dentist tracks it over time.
Follow-up is how mandibular advancement device side effects get caught early. The AADSM Standards call for a visit within 30 days of getting the appliance. After that, visits come every 6 months during the first year and at least once a year after [4].
Side effects also cause fewer people to quit. The guideline found patients stopped appliance therapy because of side effects less often than they stopped CPAP [1].
Oral Appliance vs CPAP vs Over-the-Counter Mouthpiece
In short: CPAP lowers AHI more, custom appliances match it on sleepiness and quality of life, and store-bought devices aren’t recommended.
| Feature | Custom oral appliance | CPAP | Over-the-counter mouthpiece |
|---|---|---|---|
| How it works | Holds the lower jaw forward | Pushes pressurized air through a mask | Holds the jaw forward, with a molded fit |
| Who provides it | A trained dentist, after a physician diagnosis | A sleep physician’s prescription | Bought online or in stores |
| Adjustable in small steps | Yes, if titratable [1] | Pressure is adjustable [1] | Limited or none |
| Guideline position | Recommended when CPAP isn’t tolerated or you prefer another option [1] | First-line option for most adults [1] | Not recommended for sleep apnea [2] |
| Power and travel | No power needed, pocket-sized [1][2] | Needs power and a machine | No power needed |
| Follow-up | Dentist visits plus a follow-up sleep test [1] | Physician follow-up | None built in |
CPAP deserves its place at the top, since it lowered AHI more than appliances in the guideline’s analysis. Custom, titratable appliances matched it on daytime sleepiness and quality of life measures, though [1]. People also report wearing appliances more hours a night. That data was self-reported, while CPAP use was recorded by the machine [1].
The two can also work together. The AADSM Standards note that an appliance worn with CPAP may allow lower air pressure and improve CPAP use [4].
The bigger gap sits between custom and store-bought. A boil and bite sleep apnea mouthpiece may quiet the snoring while breathing pauses continue underneath. In the trials the guideline reviewed, non-custom devices showed smaller, less certain drops in AHI and no clear change in daytime sleepiness [1]. A custom mandibular advancement device is built from your own scans and adjusted, then tested.
What to Expect From Consultation to Follow-Up
In short: Diagnosis, dental exam, fitting, adjustment, a follow-up sleep test, then regular visits.
Here’s how oral appliance therapy usually unfolds, from first test to long-term care.
- Diagnosis. A sleep physician confirms obstructive sleep apnea with an in-lab sleep study or a home sleep apnea test [2].
- Dental sleep exam. Your dentist verifies the diagnosis, then examines your teeth, gums, bite, jaw joints, and airway [4].
- Fitting. The appliance is made from impressions or scans of your mouth. At the fitting visit, your dentist sets a comfortable starting position [1].
- Adjustment. Most people need a few weeks to get used to sleeping with it [2]. Expect a check within 30 days, with small forward adjustments as needed [4].
- Follow-up sleep test. Once your dentist reaches the target jaw position, you go back to your physician to confirm the appliance is working [1][4].
- Ongoing visits. Plan on dental checks every 6 months during the first year and at least once a year after, with your sleep physician still involved [1][4]. Your dentist also checks the appliance each year for wear or cracks and replaces it when needed [4].
Each step answers a different question. Skipping follow-up can leave apnea undertreated or side effects unchecked [1].
Getting an Oral Appliance for Sleep Apnea in Garland
In short: Dr. Mark Musso leads sleep care in Garland, and sleep apnea consultations are complimentary.
Musso Family Dentistry has cared for Garland families on W. Centerville Road since 1971. Dr. Mark Musso leads sleep care here. He’s a Diplomate of the American Sleep and Breathing Academy (ASBA) and a member of the American Academy of Oral Systemic Health (AAOSH) [5].
His clinical focus is airway health and sleep-disordered breathing, and he teaches other dentists and medical professionals on the subject [7]. He doesn’t diagnose sleep apnea himself. He works alongside sleep physicians and ENTs so your appliance fits into a full plan of care [5][7].
Consultations for sleep apnea treatment are complimentary [5]. You’ll know the cost before any treatment starts, and CareCredit, Cherry, and the Musso Advantage Plan are available. The team speaks English and Spanish, with early appointments Monday through Thursday.
Book a complimentary sleep consultation to find out whether an oral appliance fits your diagnosis [8].
Frequently Asked Questions
In short: Quick answers on severe cases, testing, side effects, cost, and follow-up.
Can I use an oral appliance if I have severe sleep apnea?
Sometimes. CPAP comes first for severe obstructive sleep apnea, and the AASM and AADSM guideline reserves appliances for severe cases where CPAP didn’t help or couldn’t be tolerated. A follow-up sleep test then confirms the appliance is working [1].
Do I need a sleep study before getting an oral appliance?
Yes. A sleep physician diagnoses sleep apnea with an in-lab sleep study or a home sleep apnea test before a dentist fits an appliance [2]. After the appliance is adjusted, a follow-up sleep test confirms it’s working [1].
How long does it take to get used to an oral appliance for sleep apnea?
Most people need a few weeks [2]. Early side effects such as extra saliva, dry mouth, or sore teeth tend to ease during that time [2].
Will an oral appliance change my bite?
It can, and the change can become permanent [2]. In one study, overbite and overjet decreased by about 1.2 mm and 1.5 mm after two years of use, which is why regular dental checks matter [1].
Is an over-the-counter sleep apnea mouthpiece as good as a custom one?
No. The AASM doesn’t recommend over-the-counter devices for snoring or sleep apnea [2], and the guideline favors a custom, titratable appliance from a qualified dentist over non-custom devices [1].
Does an oral appliance work as well as CPAP?
CPAP lowers the apnea-hypopnea index more. Custom, titratable appliances matched CPAP on daytime sleepiness and quality of life measures in the guideline’s analysis [1].
Can an oral appliance treat central sleep apnea?
It isn’t designed to. An appliance helps a blocked airway, while central sleep apnea happens when the brain doesn’t send the signals needed to breathe [3]. Your sleep physician manages that condition.
How often will I need follow-up visits?
The AADSM Standards call for a check within 30 days of getting the appliance, then every 6 months during the first year and at least once a year after [4].
How much does an oral appliance for sleep apnea cost?
There isn’t one set price, because each appliance and follow-up plan is built around your diagnosis and your mouth. At Musso Family Dentistry, sleep apnea consultations are complimentary, you’ll know the cost before treatment starts, and CareCredit, Cherry, and the Musso Advantage Plan are available [5].
Key Terms
In short: Plain-English definitions of the terms used above.
| Term | Definition |
|---|---|
| Obstructive sleep apnea (OSA) | A condition where the upper airway gets blocked many times during sleep, reducing or stopping airflow [3]. |
| Central sleep apnea | Sleep apnea that happens when the brain doesn’t send the signals needed to breathe [3]. |
| Apnea-hypopnea index (AHI) | The number of breathing pauses and shallow breaths per hour of sleep. |
| CPAP | Continuous positive airway pressure, a machine that pushes pressurized air through a mask to keep the airway open. |
| Oral appliance therapy | Treatment with a removable mouthpiece worn during sleep to keep the airway open [2]. |
| Mandibular advancement device | An oral appliance that moves the lower jaw forward and slightly down; the most widely used type [2]. |
| Tongue retaining device | An appliance that holds the tongue forward instead of the jaw [1]. |
| Custom oral appliance | An appliance made from impressions or scans of your own mouth that engages both arches [1]. |
| Titratable appliance | An appliance that allows varying amounts of jaw advancement, adjusted in small steps [1]. |
| Non-custom (boil and bite) device | A mostly prefabricated mouthpiece partly molded to the teeth [1]. |
| Home sleep apnea test | A sleep test done at home that a sleep physician can use to diagnose sleep apnea [2]. |
| Follow-up sleep test | A sleep test after fitting that confirms the appliance works or guides the next adjustment [1]. |
| Qualified dentist | The guideline’s term for a dentist with added training or experience in dental sleep medicine [1]. |
| Overbite and overjet | The vertical and horizontal overlap of the upper front teeth over the lower front teeth. |
At a Glance
In short: Quick reference cards for the practice, the dentist, the guideline, and the device.
Musso Family Dentistry
| Property | Value |
|---|---|
| Location | 513 W. Centerville Rd., Garland, TX 75041 |
| Established | 1971 |
| Hours | Monday to Thursday, 7:00 am to 4:30 pm |
| Languages | English and Spanish |
| Sleep consultations | Complimentary [5] |
| Financing | CareCredit, Cherry, Musso Advantage Plan |
Dr. Mark C. Musso, DDS
| Property | Value |
|---|---|
| Role | Co-owner, leads sleep and airway care [7] |
| Credentials | Diplomate, American Sleep and Breathing Academy; member, American Academy of Oral Systemic Health [5] |
| Education | DDS, UT Dental Branch Houston, 1994 [7] |
| Care model | Works alongside sleep physicians and ENTs; does not diagnose sleep apnea independently [5][7] |
2015 AASM and AADSM oral appliance guideline
| Property | Value |
|---|---|
| Published | J Clin Sleep Med, July 2015 [1] |
| Key recommendation | Consider oral appliances for adults with OSA who are intolerant of CPAP or prefer alternate therapy [1] |
| Device preference | Custom, titratable over non-custom [1] |
| Severe OSA | CPAP first line; appliance reserved for those who didn’t benefit from or couldn’t tolerate CPAP [1] |
| Follow-up | Follow-up sleep testing and periodic visits with dentist and sleep physician [1] |
Custom mandibular advancement device
| Property | Value |
|---|---|
| Action | Holds the lower jaw forward and slightly down [2] |
| Made from | Impressions or scans of your mouth [1] |
| Adjustment | Titrated in small steps [1] |
| Common side effects | Extra saliva, dry mouth, tooth and jaw discomfort [2] |
Sources
In short: The primary sources behind every numbered citation above.
- Ramar K, Dort LC, Katz SG, et al. Clinical Practice Guideline for the Treatment of Obstructive Sleep Apnea and Snoring with Oral Appliance Therapy: An Update for 2015. American Academy of Sleep Medicine and American Academy of Dental Sleep Medicine. J Clin Sleep Med. 2015;11(7):773-827. https://aasm.org/resources/clinicalguidelines/oral_appliance-osa.pdf
- American Academy of Sleep Medicine. Oral Appliance Therapy. Sleep Education. Reviewed October 2020, updated March 2026. https://sleepeducation.org/patients/oral-appliance-therapy/
- National Heart, Lung, and Blood Institute. What Is Sleep Apnea? Updated January 9, 2025. https://www.nhlbi.nih.gov/health/sleep-apnea
- Levine M, Cantwell MK, Postol K, Schwartz DB. Dental Sleep Medicine Standards for Screening, Treating, and Management of Sleep-Related Breathing Disorders in Adults Using Oral Appliance Therapy. American Academy of Dental Sleep Medicine. J Dent Sleep Med. 2025;12(2). https://www.aadsm.org/docs/jdsm.4.10.2025.sa1.pdf
- Musso Family Dentistry. Sleep Apnea and Airway Treatment. https://www.mussofamilydentistry.com/services/sleep-apnea
- Musso Family Dentistry. TMJ Treatment. https://www.mussofamilydentistry.com/services/tmj-treatment
- Musso Family Dentistry. About Us. https://www.mussofamilydentistry.com/about
- Musso Family Dentistry. Book an Appointment. https://book.modento.io/musso-family-dentistry-tx