What Are Dental Sleep Appliances?
Dental sleep appliances are oral devices worn at night that treat obstructive sleep apnea (OSA) by physically repositioning structures in the mouth and throat to keep the airway open. During obstructive sleep apnea, the soft tissues at the back of the throat collapse during sleep, blocking airflow and causing repeated pauses in breathing. These pauses reduce blood oxygen levels and fragment sleep.
A dental sleep appliance works by holding the lower jaw (mandible) in a slightly forward position. This forward positioning tightens the soft tissues and muscles of the upper airway, preventing them from collapsing. The device also indirectly moves the tongue forward, since the tongue is attached to the lower jaw, further opening the airway.
The American Academy of Sleep Medicine recognizes oral appliance therapy as a standard treatment for obstructive sleep apnea. It is considered a first-line treatment for mild to moderate OSA and an alternative for patients with severe OSA who cannot tolerate or refuse CPAP therapy.
Types of Dental Sleep Appliances
There are two main categories of dental sleep appliances. The mandibular advancement device is by far the most commonly prescribed.
Mandibular Advancement Devices (MADs)
A mandibular advancement device consists of two custom-molded trays, one for the upper teeth and one for the lower teeth, connected by a mechanism that holds the lower jaw forward. Most MADs allow the degree of advancement to be adjusted over time, so your dentist can find the position that best controls your apnea while minimizing jaw discomfort.
Several FDA-cleared MAD designs are available, including the Herbst-style, the dorsal fin style, and the EMA (Elastic Mandibular Advancement). Your dentist selects the design based on your jaw anatomy, tooth condition, and how much advancement is needed. All custom MADs are fabricated in a dental laboratory from impressions or digital scans of your teeth.
Tongue-Retaining Devices (TRDs)
Tongue-retaining devices hold the tongue forward using gentle suction rather than repositioning the jaw. They are less commonly prescribed than MADs and are generally used for patients who do not have enough teeth to anchor a mandibular advancement device, or for patients who cannot tolerate jaw advancement.
TRDs can be effective but are often less comfortable and less well-tolerated than MADs. Most dental sleep medicine practitioners start with a MAD as the first option.
Custom Devices vs. Over-the-Counter Options
Over-the-counter boil-and-bite devices are available at pharmacies and online for $30-$100. While they use the same basic principle of jaw advancement, they are not custom-fitted and cannot be precisely adjusted. Research shows that custom-fitted devices from a dentist are significantly more effective at reducing apnea episodes and are better tolerated by patients over time. The American Academy of Dental Sleep Medicine recommends custom devices over OTC alternatives.
Dental Appliance vs. CPAP for Sleep Apnea
CPAP (continuous positive airway pressure) remains the most effective treatment for obstructive sleep apnea, particularly severe cases. A CPAP machine delivers pressurized air through a mask to keep the airway open. It is highly effective when used consistently.
However, CPAP adherence is a well-known problem. Studies show that 30-50% of patients prescribed CPAP do not use it consistently. Common complaints include mask discomfort, dry mouth, claustrophobia, noise, and difficulty traveling with the machine.
Dental appliances are less effective than CPAP at reducing the apnea-hypopnea index (AHI, the measure of apnea severity). However, because patients tend to wear dental appliances more consistently, the real-world health outcomes can be comparable for mild to moderate cases. A device that is worn every night at 70% effectiveness may produce better results than a device that is worn only half the time at 95% effectiveness.
Key Differences at a Glance
- Effectiveness: CPAP is more effective at eliminating apnea events. Dental appliances reduce events by approximately 50-70% in most patients.
- Compliance: Patients are more likely to use a dental appliance nightly. CPAP compliance rates are lower due to discomfort and inconvenience.
- Portability: Dental appliances are small and easy to travel with. CPAP machines require a power source and are bulkier.
- Noise: Dental appliances are silent. CPAP machines produce some noise, which can disturb bed partners.
- Side effects: CPAP can cause dry mouth, skin irritation, and aerophagia (swallowing air). Dental appliances can cause jaw soreness, tooth movement, and bite changes.
- Cost: Both are typically covered by medical insurance. Out-of-pocket costs are similar ($1,500-$3,000 for either option).
Who Is a Candidate for a Dental Sleep Appliance?
A dental sleep appliance may be appropriate if you have mild to moderate obstructive sleep apnea (AHI of 5-30 events per hour), you have tried CPAP and cannot tolerate it, you prefer a less intrusive treatment option, or you need a portable option for travel.
Dental appliances are less likely to be recommended as a sole treatment for severe sleep apnea (AHI above 30) unless CPAP has been tried and failed. Some patients with severe OSA use a dental appliance in combination with CPAP to reduce the pressure setting needed.
You need adequate dental health to wear a MAD. Patients must have enough healthy teeth (typically at least 8-10 per arch) to anchor the device. Active gum disease, loose teeth, or significant jaw joint (TMJ) problems may need to be addressed before oral appliance therapy can begin. Your dentist will evaluate your suitability during a thorough examination.
The Fitting Process
Getting a dental sleep appliance involves coordination between your sleep physician and your dentist. The process typically takes 2-4 visits over several weeks.
Step-by-Step Process
First, your sleep physician diagnoses sleep apnea through a sleep study (polysomnography or home sleep test) and writes a prescription for oral appliance therapy. Without a diagnosis and prescription, medical insurance will not cover the device.
At your first dental visit, the dentist examines your teeth, jaw joints, and bite. Digital scans or physical impressions of your teeth are taken and sent to a dental laboratory. The laboratory fabricates the custom device, which typically takes 2-3 weeks.
At the delivery appointment, the dentist fits the appliance, adjusts it, and teaches you how to insert, remove, and clean it. The initial jaw advancement is set at a conservative position to allow your jaw to adapt. Over the next several weeks, the dentist gradually advances the lower jaw tray in small increments until your symptoms improve.
Once you reach an effective setting, your sleep physician may order a follow-up sleep study to confirm the device is adequately controlling your apnea. Periodic follow-up visits with your dentist (typically every 6-12 months) monitor for side effects and ensure the device continues to fit properly.
Cost and Insurance Coverage
A custom dental sleep appliance typically costs $1,500 to $3,000. This includes the impressions, the laboratory-fabricated device, all fitting and adjustment appointments, and initial follow-up visits. The cost varies by device type, geographic location, and provider.
Dental sleep appliances are covered by medical insurance, not dental insurance, because sleep apnea is a medical condition. Most medical insurance plans, including Medicare, cover oral appliance therapy when prescribed by a physician after a documented sleep study. You will likely need a prior authorization from your insurer. Copays and deductibles apply based on your specific plan.
If you do not have medical insurance coverage, many dental sleep medicine practices offer payment plans. The cost of the device is often comparable to the cost of a CPAP machine and supplies over a few years. Costs vary by location and provider.
Side Effects and Long-Term Considerations
Most side effects of dental sleep appliances are mild and temporary. Jaw soreness or stiffness in the morning is the most common complaint, especially during the first few weeks. This usually resolves as the jaw muscles adapt. Excessive salivation or dry mouth can occur initially but typically improves over time.
With long-term use (years), some patients experience gradual changes in their bite. The lower front teeth may shift forward slightly, or the back teeth may not come together as tightly as before. These changes are generally subtle and do not cause functional problems for most patients. Your dentist monitors for bite changes at follow-up visits.
Morning jaw exercises, sometimes called a "morning repositioner," can help your jaw return to its normal position after removing the appliance. Your dentist will instruct you on these exercises.
When to See a Specialist for Dental Sleep Medicine
Not all dentists provide sleep apnea appliances. Look for a dentist who has specific training in dental sleep medicine. The American Academy of Dental Sleep Medicine (AADSM) maintains a directory of qualified providers. Prosthodontists, with their advanced training in oral devices and jaw function, are particularly well-suited to this work.
If you have been diagnosed with sleep apnea and are considering an alternative to CPAP, start by asking your sleep physician about oral appliance therapy. They can provide a prescription and help you find a qualified dental provider. Learn more on our prosthodontics specialty page.
Find a Dental Sleep Medicine Provider Near You
Every prosthodontist on My Specialty Dentist has verified specialty credentials. Search by location to find providers experienced in dental sleep appliances who can evaluate whether oral appliance therapy is right for your sleep apnea.
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