What This Guide Covers and Who It Is For
This guide explains how orthodontic treatments can help manage obstructive sleep apnea by addressing structural causes of airway obstruction.
Obstructive sleep apnea, often called OSA, happens when the soft tissues in your throat collapse during sleep. This blocks airflow partially or completely. The result is repeated breathing pauses, poor sleep quality, and lower oxygen levels. Over time, untreated OSA raises the risk of high blood pressure, heart disease, and daytime fatigue.
Not all OSA is caused by the same factors. In some people, the problem is partly structural. A narrow upper jaw, a lower jaw that sits too far back, or crowded airway anatomy can make collapse more likely. When these skeletal issues play a role, orthodontic interventions may help by physically reshaping or repositioning the jaw structures that support the airway.
This guide covers two main orthodontic approaches: mandibular advancement devices (MADs) for adults and rapid palatal expansion (RPE) for children and adolescents. It is written for patients, parents, and caregivers who want to understand how these treatments work, who they help, and what the process involves. If you are looking for general information about braces, aligners, and other orthodontic care, visit the orthodontics page.
How Orthodontic Treatments Address Sleep Apnea
Orthodontic treatments for OSA work by changing the position or shape of the jaw to create more room in the airway.
The Anatomy Behind Obstructive Sleep Apnea
The upper airway runs from the nose through the back of the throat. It is surrounded by soft tissue, the tongue, and bony structures like the jaw and palate. During sleep, muscles relax and these tissues can sag inward.
In people with certain facial structures, the airway is already narrower to begin with. A recessed lower jaw (retrognathia) pushes the tongue base closer to the back wall of the throat. A narrow, high-arched palate reduces nasal airway volume. Both conditions make obstruction more likely when muscles relax during sleep. [4]
Diagnosing these structural factors is a key step. A sleep medicine physician uses polysomnography, an overnight sleep study, to confirm OSA and grade its severity. The apnea-hypopnea index (AHI), which counts breathing pauses per hour of sleep, classifies OSA as mild (5 to 14 events), moderate (15 to 29 events), or severe (30 or more events).
Mandibular Advancement Devices for Adults
A mandibular advancement device (MAD) is a custom oral appliance worn during sleep. It fits over the upper and lower teeth and holds the lower jaw in a forward position. This pulls the tongue base and surrounding soft tissue away from the back of the throat, widening the airway.
MADs are typically recommended for adults with mild to moderate OSA. They may also be used for patients with severe OSA who cannot tolerate CPAP (continuous positive airway pressure) therapy. A 2024 clinical trial using cone beam computed tomography (CBCT) imaging showed that oral appliance therapy significantly increased airway dimensions in adult OSA patients. [2]
Custom MADs are fabricated by a dentist or prosthodontist trained in dental sleep medicine. They differ from over-the-counter boil-and-bite devices in fit, adjustability, and effectiveness. Custom devices allow the clinician to titrate, or gradually adjust, the degree of jaw advancement to find the most effective and comfortable position.
Common side effects include temporary jaw soreness, excess saliva, and minor changes in bite alignment. These effects are usually mild and tend to improve over the first few weeks. Long-term use may cause gradual changes in tooth position, so regular follow-up with a dental specialist is important.
Rapid Palatal Expansion for Children and Adolescents
Rapid palatal expansion (RPE) is an orthodontic technique that widens the upper jaw by separating the midpalatal suture, the growth plate that runs along the center of the palate. An RPE device is fixed to the upper molars and turned with a key at regular intervals, usually once or twice daily, to gradually widen the palate over several weeks.
A systematic review and meta-analysis found that orthodontic and orthopedic treatments, including RPE, significantly reduced AHI in children with OSA. [3] Another systematic review and meta-analysis focusing specifically on orthodontic treatments for pediatric OSA confirmed that rapid maxillary expansion was associated with meaningful reductions in AHI scores. [5]
RPE works best in children and adolescents because the midpalatal suture has not yet fully fused. In most people, this suture begins to fuse in the mid-to-late teenage years. By widening the palate before fusion, the treatment increases nasal cavity volume, improves nasal breathing, and creates more space for the tongue. This combination can reduce the structural factors that contribute to airway collapse during sleep.
A 2024 systematic review also examined the effectiveness of combining mandibular advancement appliances with maxillary expansion devices in children with OSA. The review found that this combined approach showed positive effects on reducing OSA severity in pediatric patients. [1]
Combined and Functional Orthodontic Approaches
Some children benefit from functional appliances that advance the lower jaw while also expanding the palate. These devices guide jaw growth in young patients whose skeletal development is still active. Examples include the Herbst appliance and twin block appliance.
Research suggests that combining maxillary expansion with mandibular advancement may produce greater airway improvements than either treatment alone. [1] Functional orthodontic appliances have also been shown to produce favorable changes in airway dimensions in growing children. [3]
These combined approaches require careful planning. The orthodontist must consider the child's growth stage, the severity of the OSA, and whether adenoid or tonsil enlargement is also contributing to the obstruction. In many cases, pediatric OSA treatment involves a team that includes an orthodontist, a sleep medicine physician, and sometimes an ENT (ear, nose, and throat) specialist. [4]
Practical Details: Age, Timing, and Preparation
The best orthodontic approach for sleep apnea depends on the patient's age, the severity of OSA, and the specific structural issues involved.
Age and Candidate Considerations
Rapid palatal expansion is most effective in children roughly between the ages of 5 and 15, before the midpalatal suture fuses. [4] Early intervention during this window can take advantage of active growth to reshape the jaw and expand the airway. In adolescents closer to skeletal maturity, the suture may be partially fused, and a surgically assisted palatal expansion may be needed.
Mandibular advancement devices are primarily used in adults. They are not typically recommended for children because their jaws are still growing and a fixed forward position could interfere with normal development. For adults, MADs are a well-established alternative to CPAP for mild to moderate OSA.
Not every patient with OSA is a candidate for orthodontic treatment. People with severe OSA, significant obesity-related airway collapse, or central sleep apnea (a type caused by brain signaling issues rather than physical obstruction) typically need CPAP or other medical interventions. An orthodontic approach works best when structural anatomy plays a clear role in the obstruction.
Required Testing Before Treatment
A confirmed diagnosis of OSA through polysomnography or a home sleep apnea test is required before orthodontic treatment can begin. This testing establishes the baseline AHI and rules out other sleep disorders.
The dental specialist will also perform a clinical exam that includes evaluating the teeth, jaw alignment, palate width, tongue size, and airway anatomy. Imaging such as a lateral cephalometric X-ray or CBCT scan may be used to measure airway dimensions and plan the treatment. [2] A thorough dental and periodontal exam ensures the teeth and supporting bone are healthy enough to support an appliance.
What to Expect: The Treatment Process Step by Step
Orthodontic treatment for sleep apnea follows a structured process that involves diagnosis, appliance fitting, adjustment, and long-term follow-up.
Mandibular Advancement Device Process (Adults)
The process starts with a referral from a sleep medicine physician who has confirmed the diagnosis of mild to moderate OSA. The dental specialist then takes impressions or digital scans of your teeth and a bite registration to record how your jaws fit together.
A dental lab fabricates the custom MAD, which typically takes one to three weeks. At the fitting appointment, the dentist adjusts the device and sets the initial jaw advancement position. You will return for several follow-up visits over the next few weeks so the clinician can titrate the advancement gradually. The goal is to find the position that best opens the airway while remaining comfortable.
Once the optimal position is reached, a follow-up sleep study is usually recommended to confirm the device is effectively reducing AHI. [2] Ongoing visits, typically every six to twelve months, monitor tooth position, jaw joint health, and appliance condition. Most patients adapt to wearing the device within one to two weeks.
Rapid Palatal Expansion Process (Children)
For children, the process begins with an orthodontic evaluation and imaging to confirm that a narrow palate is contributing to airway obstruction. If RPE is recommended, the orthodontist takes impressions and has a custom expander fabricated.
The expander is cemented onto the upper back teeth. A parent or caregiver turns a small screw in the device using a special key, usually once or twice per day. Each turn widens the palate by a fraction of a millimeter. The active expansion phase typically lasts two to four weeks. During this time, a small gap may appear between the upper front teeth. This gap is normal and usually closes on its own or with follow-up orthodontic treatment.
After active expansion, the device stays in place for several months to allow new bone to fill in the widened suture. The total treatment time, including the retention phase, is often six to twelve months. A follow-up sleep study helps determine whether the expansion has sufficiently reduced OSA severity. [5]
Cost Factors and Insurance Considerations
Costs for orthodontic sleep apnea treatments vary by location, provider, and case complexity.
Custom mandibular advancement devices typically range from $1,500 to $3,000. This usually includes the initial consultation, impressions, fabrication, fitting, and several titration visits. Replacement devices may be needed every two to five years as materials wear down.
Rapid palatal expansion costs generally fall between $1,000 and $3,500 when performed as part of an orthodontic treatment plan. If additional orthodontic work like braces is needed after expansion, the total cost will be higher.
Insurance coverage for these treatments can be complicated. Some medical insurance plans cover oral appliances for OSA when prescribed by a sleep medicine physician. Dental insurance may cover RPE if it is part of a broader orthodontic plan. Coverage depends on the specific policy, the documented diagnosis, and whether the insurer considers the treatment medically necessary. Ask your provider's office to verify benefits with both your medical and dental insurance before starting treatment.
When to See a Specialist
You should see a dental specialist trained in sleep medicine if you have a confirmed OSA diagnosis and want to explore non-CPAP options.
Adults who have been diagnosed with mild to moderate OSA and struggle with CPAP compliance are strong candidates for a mandibular advancement device evaluation. Signs that a structural jaw issue may be involved include a visibly recessed lower jaw, a narrow palate, or chronic mouth breathing.
For children, parents should consider an orthodontic evaluation if the child snores regularly, breathes through the mouth during the day, has a narrow or high-arched palate, or has been diagnosed with OSA after a sleep study. Pediatric sleep-disordered breathing may also present as bedwetting, restless sleep, behavioral issues, or difficulty concentrating during the day. [4]
A general dentist can perform an initial screening and refer you to the right specialist. An orthodontist with training in dental sleep medicine can evaluate jaw structure and airway anatomy to determine whether an orthodontic intervention is appropriate. For adults needing a mandibular advancement device, a prosthodontist with dental sleep medicine training is another option. In all cases, treatment should be coordinated with a board-certified sleep medicine physician who manages the overall diagnosis and care plan.
Find an Orthodontist Trained in Dental Sleep Medicine
If you or your child has been diagnosed with obstructive sleep apnea and you want to explore orthodontic treatment options, finding the right specialist is the first step. Use the My Specialty Dentist directory to search for an orthodontist or prosthodontist in your area who has experience with mandibular advancement devices, palatal expansion, or other dental sleep medicine approaches. You can filter by specialty, location, and area of focus to find a provider who fits your needs.
Search Orthodontists in Your Area