The Connection Between Sleep Apnea and Oral Health

Sleep problems, such as snoring and insomnia, are signs of a sleep disorder called sleep apnea. Sleep apnea can contribute to oral health problems and dental problems can also cause sleep apnea. Learn more about the connection between sleep apnea and your oral health.

Woman having her teeth examined
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What Is Sleep Apnea?

Sleep apnea is a very common sleep disorder affecting 25 million American adults, according to the American Academy of Sleep Medicine. It is characterized by repeated breathing interruptions (apneas) during sleep cycles. Apneas are caused by tissue collapses of the airway related to weak airway muscles, a large tongue, being overweight, or other risk factors. Apneas prevent oxygen from reaching the lungs.

Because sleep apnea disrupts the sleep cycle, this zaps daytime energy and mental performance and affects long-term health.

Untreated sleep apnea can be fatal because it can cause oxygen drops, increased blood pressure, and heart strain.

Common symptoms of sleep apnea include:

  • Reduced and absent breathing
  • Frequent and loud snoring
  • Gasping for air during sleep
  • Daytime sleepiness and fatigue
  • Decreases in attention and concentration
  • Forgetfulness
  • Dry mouth and headaches upon waking
  • Nocturia (waking up often during the night to urinate)
  • Sexual dysfunction and/or decreased libido

In addition to the above, symptoms in women include anxiety, depression, insomnia, and various sleep disturbances such as frequent wakening. Children may experience asthma exacerbation, hyperactivity, bed-wetting, and academic performance problems.

The major risk factors of sleep apnea are being overweight, a family history of snoring or sleep apnea, and being male. Additional risk factors include:

  • Being over 40 years old
  • Being a post-menopausal woman
  • A large neck
  • Large tonsils or a large tongue
  • A small jaw bone
  • Nasal or sinus problems

Connection to Oral Health

Good, quality sleep keeps you healthy and reduces bad breath, mouth ulcers, and development and progression of periodontal disease (gum disease). Dental problems associated with sleep apnea include TMJ disorders, bruxism, and mouth breathing.


Evidence suggests temporomandibular joint (TMJ) disorders and sleep apnea go hand-in-hand. The TMJ connects the lower jaw to the upper jaw. You have two TMJ joints, one on each side of your face.

Symptoms of a TMJ disorder include:

  • Jaw pain
  • Pain throughout the head, neck, and shoulders
  • Problems chewing
  • Jaw joints that make clicking or grinding sounds
  • Locked jaw (the inability to open or close the mouth for a period of time)

One 2013 study reported in the Journal of Dental Research found people who were more likely to have sleep apnea (based on risk factors) were also three times more likely to suffer from a TMJ disorder. The study also found people with two or more signs of sleep apnea had a 73% higher risk for a TMJ disorder regardless of their age, race, smoking history, or weight.


Bruxism is simply a fancy name for grinding the teeth or clenching the jaw. While it can happen at any time, it frequently occurs while a person is asleep. Bruxism has negative effects on your sleep, including waking up unrefreshed and with headaches and neck and jaw pain. Research from The Journal of Oral & Facial Pain and Headache suggests bruxism may affect up to 31% of adults, and at least a quarter of them may have sleep apnea.

Bruxism is considered a sleep-related disorder because it causes uncontrolled and involuntary movement of the jaw during sleep.

It is quite possible you may not even know if you suffer from bruxism, but your dentist may discover evidence during a cleaning exam.

Signs can range from loose teeth to eroded tooth surfaces, or cracked, chipped, and broken teeth. If your dentist observes symptoms, he or she may ask about muscular pain in your head, neck, face, and jaw, as well as dryness of your lips, mouth, and throat upon awakening.

Mouth Breathing

Sleep apnea causes a person to breathe through the mouth (mouth breathing). Mouth breathing results in dry mouth and leads to tooth decay. Additional consequences of dry mouth are plaque, mouth sores, gingivitis (gum inflammation), and periodontal disease.

According to research reported in the Journal of the Indian Society of Periodontology, periodontal disease affects 62.3% of people with sleep apnea and gingivitis accounts for 34.1% of people with sleep apnea.  

Sleep Apnea in Children

Up to 4% of children between ages two and eight have sleep apnea, according to The American Sleep Apnea Association. Childhood sleep apnea comes with many health risks, including the risk to oral health, which is often overlooked. Sleep issues in children typically involve mouth breathing, which can create serious problems with their teeth and gums.

Research reported in the Journal of Dental Sleep Medicine finds a link between childhood sleep issues and dental problems, including cavities and periodontal disease. Through dental exams, researchers found children with sleep disorders had three times the incidence for cavities and also had deeper spaces—up to three times deeper—created by inflamed gums. They also had more gum bleeding, tooth pain and sensitivity, and mouth sores.

What to Look For

Some symptoms of sleep apnea are specific to dental problems. Dental symptoms to look out for in both adults and children include:

  • clenching and grinding teeth during sleep, sometimes loud enough to wake you or your partner up
  • tightness and pain in jaw joints
  • sore and raw spots from chewing the inside of one or both cheeks
  • dull headaches that start at the temples

Be sure to discuss the above symptoms with your dentist. He or she may suggest ways to alleviate them. Your medical doctor can determine if your symptoms are related to sleep apnea or other sleep disorder.


Your dentist may notice dental problems associated with sleep apnea and recommend you get in touch with your healthcare provider. Sleep apnea is usually diagnosed by a medical doctor who will suggest corrective treatment measures, such as a CPAP machine.

Your dentist can help you to alleviate dental symptoms through behavior modifications including improving sleep quality, managing your dental health, orthodontic treatment to repair problems with teeth misalignment, treatments for dry mouth, and/or a dental mouthpiece to manage grinding and clenching.

Mouthpieces can be custom-made through dental facilities and can be quite pricey, but they are life-changing in that they can dramatically improve sleep and reduce dental problems. There are increasingly more options for mouthpieces that are accessible online and less expensive as well. Just be sure to discuss these with your dentist before purchasing.

A Word From Verywell

Sleep disorders affect health in many ways and a good night's sleep is important to feeling refreshed and energized as well as for your mental and physical health. If you are concerned you may have sleep apnea, talk to your medical doctor about getting tested to determine the cause of your sleep troubles. Be sure to ask about all the treatment options available, including CPAP machines and dental devices, to figure out what treatments best work for your unique situation.

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

By Lana Barhum
Lana Barhum has been a freelance medical writer since 2009. She shares advice on living well with chronic disease.