How TMJ Problems and Sleep Apnea Are Connected
The temporomandibular joints (TMJs) are the two hinge joints that connect your lower jaw to your skull. Problems with these joints and the chewing muscles around them are called temporomandibular disorders, or TMD. Common signs include jaw pain, clicking or popping, limited opening, and headaches near the temples.
Obstructive sleep apnea (OSA) is different. It happens when the airway repeatedly narrows or closes during sleep, so breathing pauses or becomes shallow. The National Heart, Lung, and Blood Institute notes that a health care provider usually orders a sleep study to confirm it.[12]
These two conditions can look unrelated, but they often show up in the same person. Many people with jaw pain also sleep poorly, and many people with sleep apnea wake with a sore jaw or a headache. This page explains what research says about the overlap, what it means if you use an oral appliance for sleep apnea, and when to ask an orofacial pain specialist for help.
What the Research Shows
The overlap is real in the studies, but the direction of the link is still unclear.
TMD and OSA Often Occur Together
A 2024 systematic review and meta-analysis pooled six studies of adults. It found that people with TMD had about 2.6 times the odds of also having OSA (odds ratio 2.61, 95% confidence interval 2.31 to 2.95). The result held whether OSA was measured with an overnight sleep study or with a validated questionnaire.[1]
An earlier systematic review looked at painful TMD specifically. In the five studies it included, every cross-sectional study found more OSA among people with TMD. One cohort study suggested OSA might be a risk factor for developing TMD. The authors also said that whether TMD helps cause OSA is still unknown because good-quality evidence is lacking.[2]
Why Would They Overlap?
Researchers do not have a confirmed explanation. Poor sleep and pain may feed each other, and shared features such as jaw position or muscle activity at night may play a part, but these ideas are still being tested. The authors of the systematic review above stated plainly that the role of TMD in causing OSA remains unknown.[2]
The safest takeaway is practical. If you have TMD symptoms and also snore, gasp at night, or feel very tired in the day, mention both to your doctor and dentist.
Sleep Bruxism Is Part of the Picture
Sleep bruxism means clenching or grinding your teeth during sleep. An international expert group describes it as muscle activity during sleep, and says that in otherwise healthy people it is better seen as a behavior that can raise or lower risk for other problems than as a disease on its own.[7]
Grinding and clenching can overload the jaw muscles and joints, so people with TMD often have bruxism too. Bruxism and OSA may also be linked through brief arousals from sleep. A systematic review of sleep-lab studies found that some grinding events happen close to the end of a breathing pause, but it concluded there was not enough evidence to prove that OSA causes grinding.[8] A larger 2024 meta-analysis of 14 studies found no clear difference in sleep bruxism between people with and without OSA, although the authors called the study quality low and said dentists and physicians should still check for both conditions.[9]
Our page on bruxism and sleep apnea goes deeper on this overlap.
Can a Sleep Apnea Oral Appliance Affect the Jaw Joint?
This is one of the most common questions from people who already have jaw pain. Oral appliance therapy (OAT) uses a custom device, usually a mandibular advancement device, that holds the lower jaw slightly forward during sleep. The American Academy of Sleep Medicine and the American Academy of Dental Sleep Medicine guideline suggests that a qualified dentist use a custom, adjustable appliance and that the dentist provide follow-up.[6]
What Can Happen
Because the device moves the jaw, some people get temporary jaw soreness, muscle tightness, or bite changes. A position paper from the American Academy of Craniofacial Pain says oral appliances have the potential to cause TMJ pain and dysfunction, and that dentists who provide them should be competent in assessing and managing TMD.[5]
Over the long term, teeth can move. The American Association of Orthodontists white paper describes typical changes such as reduced overjet and overbite, and notes that these changes can be progressive with ongoing use.[11]
What Studies Found in People Who Already Have TMD
The evidence is more reassuring than many patients expect. A 2019 systematic review and meta-analysis of 12 studies found that people with pre-existing TMD signs and symptoms did not have significant worsening while using a mandibular advancement device. The authors concluded that TMD does not appear to be a routine reason to avoid one.[3]
A 2023 review of 13 studies was more mixed. Some studies found fewer TMD symptoms after treatment, and others found no significant change. The authors noted that long-term data are scarce.[4]
In plain terms, having TMD does not automatically rule out an oral appliance. It does mean the dentist should examine your jaw first, start slowly, and watch for changes.
How Dentists Manage the Risk
A dentist who provides oral appliance therapy will usually take these steps to protect the jaw.
- Examine your jaw joints and chewing muscles before making the device, and record any pain, clicking, or limited opening as a baseline.[5]
- Use a custom, adjustable appliance and move the jaw forward in small steps instead of all at once.[6]
- Schedule follow-up visits to check the bite, the teeth, and the joints, and adjust or pause treatment if pain grows.[6][11]
- Coordinate with your sleep physician, who confirms with a repeat sleep test that the appliance is working.[6]
- Refer you to an orofacial pain specialist or an orthodontist if the jaw or bite problems need treatment of their own.[10][11]
Sleep Apnea Must Be Diagnosed by a Physician
Neither a dentist nor an orofacial pain specialist diagnoses sleep apnea. A physician does, using a sleep study. That can be an in-lab study (polysomnography) or a home sleep apnea test. The result, including the apnea-hypopnea index (AHI), tells your physician how severe the condition is and which treatments make sense.[6][12]
An oral appliance is prescribed by a physician for an adult with a confirmed OSA diagnosis. The guideline recommends that sleep physicians consider oral appliances for adults with OSA who cannot tolerate CPAP or who prefer another option.[6] Skipping the diagnosis and buying a device on your own can leave real sleep apnea untreated.
Signs worth raising with your doctor include loud snoring, gasping or choking at night, pauses in breathing seen by a partner, waking with a dry mouth or headache, and heavy daytime sleepiness. See our overview of dental appliances for sleep apnea for how the devices work.
When to See an Orofacial Pain Specialist
Orofacial pain was recognized by the American Dental Association as a dental specialty in 2020. It joins 11 other recognized specialties. Dental sleep medicine is not on that list, which is why we describe dentists who provide oral appliances as dentists with training in dental sleep medicine, not as sleep specialists.[10]
An orofacial pain specialist has advanced training in diagnosing and managing jaw joint disorders, chronic facial pain, headaches, and sleep-related problems such as bruxism. Consider a visit in these situations.
- Your jaw pain lasts more than a few weeks or keeps coming back.
- Your jaw locks, or you cannot open your mouth fully.
- You started an oral appliance for sleep apnea and the jaw pain, headaches, or bite changes are not settling down.
- You have both jaw pain and possible sleep apnea, and you want one clinician to look at the whole picture.
- You have already tried a night guard and are still waking with pain.
What to Expect at the Visit
An orofacial pain evaluation usually includes a health history, questions about sleep and stress habits, an exam of the jaw muscles, joints, and bite, and sometimes imaging. If the specialist suspects sleep apnea, the next step is a referral to your physician for a sleep study, not a device.
Treatment for TMD is usually conservative first. That can include jaw exercises, self-care, a carefully chosen splint, and management of stress and sleep habits. You can read more in our page on orofacial pain and our overview of bruxism.
How to Find a Dentist Who Provides Oral Appliance Therapy
Start with a diagnosis. If you suspect sleep apnea, ask your primary care doctor about a sleep study. If you already have a diagnosis and want to learn about an oral appliance, ask your sleep physician for a prescription and a referral. Then look for a dentist who provides oral appliance therapy, has training in dental sleep medicine, and is comfortable examining your jaw joints.
You can search for orofacial pain specialists and other dentists near you in the MSD provider directory. When you call, ask each office whether it provides oral appliances, how it checks the jaw before treatment, and how it coordinates with your physician. Browse our list of dentists who provide oral appliance therapy, grouped by state.
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