What This Guide Covers
This guide explains how dental appliances treat obstructive sleep apnea (OSA), a condition where the soft tissues in your throat repeatedly collapse and block your airway during sleep. You will learn about the types of devices available, how they compare to CPAP therapy, what the fitting process looks like, and what results you can typically expect.
Obstructive sleep apnea affects breathing during sleep and can lead to daytime fatigue, high blood pressure, and other health problems. A CPAP machine (continuous positive airway pressure) is the most common treatment. It uses a mask and pressurized air to keep the airway open. However, many patients find CPAP uncomfortable or difficult to use consistently. Oral appliance therapy (OAT) offers an alternative that many patients find easier to tolerate. [8]
This information is for adults who have been diagnosed with sleep apnea or suspect they may have it. It is also useful for patients already using CPAP who are looking for a different option. A sleep study, ordered by a physician, is required before any sleep apnea treatment can begin.
How Dental Sleep Appliances Work
A dental sleep appliance is a small, removable device worn in the mouth during sleep that repositions the jaw or tongue to keep the airway open.
Types of Oral Appliances
The most widely used type is the mandibular advancement device (MAD). A MAD fits over your upper and lower teeth and holds the lower jaw (mandible) in a forward position. This forward movement pulls the tongue base and soft tissues away from the back of the throat, widening the airway. [4]
MADs come in two main designs: mono-block and bi-block. A mono-block device is a single piece that holds both jaws in a fixed position. A bi-block device uses two separate pieces, one for each jaw, connected by an adjustable mechanism. A 2019 systematic review and meta-analysis found that both designs reduced the apnea-hypopnea index (AHI), a measure of how many times breathing stops or slows per hour of sleep. The bi-block design showed a slight advantage in AHI reduction, though both were clinically effective. [6]
A less common type is the tongue-retaining device (TRD). Instead of moving the jaw, a TRD uses suction to hold the tongue forward. TRDs may be considered for patients who have few natural teeth or jaw joint problems that make a MAD uncomfortable. However, research on MADs is far more extensive, and MADs remain the standard recommendation. [9]
How Effective Are Dental Appliances?
Research demonstrates that oral appliances significantly reduce the number of breathing interruptions during sleep. A 2023 systematic review and meta-analysis found that appliance therapy reduced the AHI and improved oxygen saturation levels in patients with OSA. [2] The American Academy of Sleep Medicine (AASM) recommends oral appliances for patients with mild to moderate OSA and for patients with severe OSA who cannot tolerate or refuse CPAP therapy. [8]
CPAP is generally more effective at eliminating apnea events, especially in severe cases. However, effectiveness also depends on how consistently a patient uses the device. A 2023 review in the European Respiratory Review noted that oral appliances often achieve comparable health outcomes to CPAP in practice because patients tend to wear them more hours per night and on more nights. This concept is called "effective adherence." [4]
Patient-reported outcomes also favor oral appliances in several areas. A 2023 scoping review found that patients using oral appliances commonly reported improvements in daytime sleepiness, snoring, and overall quality of life. Many patients preferred oral appliances over CPAP for comfort and ease of use. [3]
Custom Devices vs. Over-the-Counter Options
Custom-fitted oral appliances are made from impressions or digital scans of your teeth. They are designed by a dentist and fabricated in a dental laboratory. These devices allow precise adjustment of jaw position, measured in millimeters, to find the most effective and comfortable setting for each patient.
Over-the-counter boil-and-bite devices are available without a prescription. They use a softened material that you mold to your teeth at home. These devices lack the precision, adjustability, and retention of custom appliances. The AASM clinical practice guideline recommends custom, titratable (adjustable) oral appliances over non-custom devices for the treatment of OSA. [8] A poorly fitting device may not advance the jaw enough to open the airway, or it may cause more side effects due to uneven pressure on the teeth.
What You Should Know Before Getting a Dental Sleep Appliance
Getting a dental sleep appliance requires a confirmed sleep apnea diagnosis and a dental evaluation to make sure your mouth is a good fit for the device.
Who Is a Good Candidate?
Most adults with mild to moderate OSA are candidates for oral appliance therapy. Your dentist and sleep physician will consider several factors. You typically need enough healthy teeth to anchor the device, usually at least 8 to 10 teeth per arch. Patients with significant gum disease, loose teeth, or severe jaw joint disorders (temporomandibular disorders, or TMD) may need additional evaluation or treatment before starting. [7]
Oral appliances are also considered for patients with severe OSA who have tried CPAP and cannot use it. According to the AASM guideline, this includes patients who are intolerant of CPAP or prefer an alternative therapy. [8] Your sleep physician makes the final determination based on your sleep study results, overall health, and the severity of your condition.
Preparing for Treatment
Before you see a dentist for an oral appliance, you need a sleep study. This is called a polysomnography (PSG) when done in a sleep lab, or a home sleep apnea test (HSAT) when done at home. A sleep physician reviews the results and provides a diagnosis with your AHI score. The dentist will need this information.
You should also gather your medical insurance information. Oral appliance therapy for sleep apnea is a medical treatment, not a dental treatment, so it is typically billed to medical insurance. Having your sleep study results and a referral or prescription from your physician will help streamline the process.
Potential Side Effects
Most side effects of oral appliance therapy are mild and temporary. Common early complaints include excessive salivation, dry mouth, tooth tenderness, and jaw soreness upon waking. These typically improve within a few weeks as you adjust to the device. [4]
Long-term use can cause changes in tooth position and bite alignment. The American Association of Orthodontists has noted that prolonged mandibular advancement may lead to measurable tooth movement and skeletal changes over time. [7] Regular follow-up appointments allow your dentist to monitor for these changes. If significant bite changes occur, orthodontic treatment may be discussed. For most patients, the health benefits of treating sleep apnea outweigh these dental side effects.
What to Expect During the Fitting Process
The process of getting a custom oral appliance typically takes two to four visits over several weeks, followed by ongoing adjustments.
Initial Evaluation
At your first visit, the dentist reviews your sleep study results and medical history. A thorough oral examination follows. The dentist checks your teeth, gums, jaw joints, and jaw range of motion. Dental X-rays or a panoramic radiograph may be taken. If your teeth and jaw are healthy enough to support an appliance, the dentist discusses device options and takes impressions or digital scans of your teeth. A bite registration records how your upper and lower teeth fit together. [8]
Device Delivery and Fitting
When the appliance arrives from the lab, typically in two to three weeks, you return for a fitting appointment. The dentist checks that the device fits snugly, does not pinch or irritate your gums, and allows you to close your lips comfortably. The initial jaw advancement setting is usually conservative, meaning the jaw is moved forward only a moderate amount.
You receive instructions on how to insert and remove the device, how to clean it, and what to expect during the first nights of use. Most patients need a short adjustment period. Sleeping with any new oral device feels unfamiliar at first.
Titration and Follow-Up
Titration is the process of gradually adjusting the appliance to find the position that best reduces your sleep apnea symptoms. Over several weeks, the dentist advances the jaw position in small increments. The goal is to reduce snoring and apnea events while keeping you comfortable. [4]
Once a good setting is found, a follow-up sleep study is typically recommended. This confirms whether the device is effectively reducing your AHI. The AASM guideline recommends a follow-up sleep test with the oral appliance in place to verify treatment success. [8] After that, most patients return for check-ups once or twice per year. These visits monitor the condition of the appliance, the health of your teeth and jaw joints, and any bite changes.
Cost of a Dental Sleep Appliance
A custom oral appliance for sleep apnea typically costs between $1,500 and $3,000. Costs vary by location, provider, and case complexity.
This range usually covers the initial evaluation, impressions or scans, the fabricated device, and a series of adjustment visits. Some providers bundle follow-up care into the initial fee, while others charge separately for titration visits and the follow-up sleep study.
Medical insurance, not dental insurance, is the usual source of coverage for oral appliance therapy. Because sleep apnea is a medical condition, many medical insurance plans cover oral appliances when prescribed by a physician and fitted by a qualified dentist. Medicare also covers oral appliances for diagnosed OSA under certain conditions. Coverage varies widely, so contacting your medical insurance provider before starting treatment is a good idea. Ask specifically about coverage for "oral appliance therapy for obstructive sleep apnea" using the correct medical billing codes.
The device itself typically lasts three to five years with proper care. Replacement costs may apply after that period. Some insurance plans cover replacement devices on a defined schedule.
When to See a Specialist
A dentist with specific training in dental sleep medicine is the right provider for oral appliance therapy. Not every general dentist offers this service.
A prosthodontist is a dental specialist with advanced training in the design, fabrication, and fitting of oral devices, including sleep appliances. Prosthodontists complete an additional three years of residency training beyond dental school, with a focus on restoring and replacing teeth and managing complex oral conditions. [10] This background makes them well-suited for cases that involve missing teeth, dental implants, extensive dental restorations, or jaw joint problems, all factors that can complicate oral appliance therapy.
You should consider seeing a specialist rather than a general dentist in several situations. If you have fewer than a full set of teeth, if you have implants or extensive bridgework, if you have a history of TMD or jaw pain, or if a previous oral appliance did not work well, a prosthodontist or sleep-trained specialist can evaluate your case with greater depth. [10]
General dentists who have completed additional training through organizations such as the American Academy of Dental Sleep Medicine (AADSM) also provide oral appliance therapy. The key is finding a provider who regularly treats sleep apnea patients, has a working relationship with sleep physicians, and can manage the follow-up process, including titration and monitoring for side effects. [8]
Find a Qualified Provider Near You
If you have been diagnosed with sleep apnea or are struggling with CPAP, a dentist trained in sleep medicine can evaluate whether an oral appliance is a good option for your situation. Use our directory to find a prosthodontist or other qualified dental specialist in your area who offers oral appliance therapy for sleep apnea.
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