Symptoms of bruxism: how can you tell if you're grinding your teeth?
Symptoms of bruxism include headaches, jaw pain, tension in the jaw muscles, and tooth wear. These symptoms are caused by overuse of the jaw muscles and may develop gradually. Not everyone is aware that they grind their teeth; instead, the symptoms reveal the existence of the problem.
What is bruxism:
Bruxism refers to the involuntary clenching or grinding of the teeth, often during sleep.
Who is a typical bruxism patient:
A person who experiences jaw pain, headaches, tension in the chewing muscles, or tooth wear for no apparent reason.
Important note:
Bruxism can go on for a long time without any obvious symptoms, and the first signs may be mild or vague.
Introduction
Bruxism is a common condition that often goes unnoticed. Many people grind their teeth without realizing it, especially while sleeping.
Symptoms often develop gradually. At first, you may experience muscle tension or stiffness in the jaw, especially in the morning. These symptoms are easily overlooked.
Over time, however, the strain can increase and lead to pain, headaches, or tooth wear. It is at this stage that bruxism is most often diagnosed.
This page discusses the most common symptoms of bruxism and how to recognize them early on.
A summary of the symptoms of bruxism
- Jaw pain and tension in the chewing muscles
- Headaches in the morning
- Tooth wear, chips, or sensitivity
- Jaw stiffness or fatigue upon waking
- Clicking or pain in the jaw joint
The most common symptoms of bruxism
The symptoms of bruxism are mainly related to overuse of the masticatory muscles, stress on the teeth, and strain on the temporomandibular joint. Symptoms can range from mild discomfort to severe pain.
Jaw pain and muscle tension
The most common symptom of bruxism is jaw pain or tension in the chewing muscles. The pain is often felt in the masseter muscle in the cheek area and may worsen throughout the day.
Muscles may feel sore, tight, or tired. Some people also experience a sensation of muscle swelling or a widening of the face as a result of prolonged exertion.
Morning headache
Headaches associated with bruxism are often felt upon waking in the morning. They are typically localized to the temples and are linked to nocturnal activity of the masticatory muscles.
The headache may resemble a tension headache and improve as the day goes on, as muscle tension eases.
Tooth wear and damage
Teeth grinding can wear down tooth enamel and lead to chips or sensitivity. These changes often develop slowly, which is why they aren’t always noticed in time.
A dentist can detect signs of wear before the patient even notices any symptoms.
Symptoms of temporomandibular joint disorder
Bruxism can also put strain on the temporomandibular joint. This can cause clicking, pain, or limited movement of the jaw.
Symptoms may be intermittent and worsen with increased physical activity.
Can bruxism be asymptomatic?
Yes, bruxism can remain completely asymptomatic for a long time. Not everyone feels pain or notices their teeth grinding, even though the jaw muscles are active, especially during sleep.
In asymptomatic bruxism, the first signs can be very subtle. For example, mild muscle tension, morning stiffness, or tooth wear may develop without you noticing.
Signs of bruxism:
- Tooth wear without pain
- Mild jaw stiffness in the mornings
- Fatigue of the masticatory muscles without obvious pain
In many cases, bruxism is not detected until a visit to the dentist, when signs of tooth wear become apparent. For this reason, bruxism can go on for a long time before it is noticed.
The absence of symptoms does not mean that bruxism has no effect. If it persists for a long time, it can still put strain on the teeth and the temporomandibular joint.
When should you be concerned about the symptoms of bruxism?
You should be concerned about symptoms of bruxism if they are recurring, get worse over time, or cause pain or damage. A single mild symptom is usually not a cause for concern, but constant stress on the teeth can lead to problems:
- Jaw pain or muscle tension is persistent or getting worse
- I often get headaches, especially in the mornings
- Teeth wear down, chip, or cause sensitivity
- Movement of the jaw feels restricted or painful
The severity of symptoms does not always reflect the seriousness of the condition. Even mild symptoms can cause changes to the teeth and jaw joint if they persist for a long time.
Early detection and treatment can prevent symptoms from worsening and reduce long-term complications.
👉 Learn more about treatment options: Treatment for bruxism
What causes the symptoms of bruxism?
The symptoms of bruxism are caused by repeated overuse of the jaw muscles. When these muscles contract forcefully and frequently, they become fatigued and sore, and can cause pain in both the muscles themselves and the surrounding tissues.
The masticatory muscles, particularly the masseter, can become active both while awake and during sleep. Muscle activity at night is often unconscious, which is why the strain can continue for a long time without being noticed.
- Constant muscle contraction causes tension and pain
- Clenching your teeth puts stress on the enamel
- The temporomandibular joint is subjected to repeated stress
There may be several underlying factors contributing to these symptoms, such as stress, sleep disorders, and nervous system regulation. These factors can increase the activity of the masticatory muscles and exacerbate the symptoms.
👉 Learn more about the underlying factors: Causes of bruxism
Symptoms of bruxism: a summary
The symptoms of bruxism are related to overuse of the jaw muscles and stress on the teeth. The most common symptoms include jaw pain, muscle tension, headaches, and tooth wear.
- Jaw pain and tension in the chewing muscles
- Morning headache and jaw stiffness
- Tooth wear and damage
- Clicking or pain in the jaw joint
Symptoms may develop gradually and go unnoticed for a long time. That is why it is important to recognize them early so that the strain can be reduced and further damage prevented.
If bruxism causes significant symptoms and other treatments do not provide sufficient relief, botulinum toxin treatment may also be considered in some cases.
👉 Read more: Treatment of bruxism with botulinum toxin
👉 Read next: Treatment of bruxism
Frequently Asked Questions About the Symptoms of Bruxism
How can I tell if I'm grinding my teeth?
Bruxism can manifest as jaw pain, morning headaches, tension in the chewing muscles, and tooth wear. Not everyone notices their own teeth grinding; instead, the symptoms reveal it.
What does bruxism feel like?
Bruxism may manifest as jaw stiffness, muscle fatigue, or pain in the cheek area. Symptoms are often most severe upon waking in the morning.
Can bruxism cause headaches?
Yes. Bruxism can cause tension headaches, which are felt mainly in the temples and often occur in the morning.
Is jaw pain always a sign of bruxism?
Not always. Jaw pain can also be caused by other factors, but bruxism is one of the most common causes of pain originating in the masticatory muscles.
Can bruxism be asymptomatic?
Yes. Bruxism can go on for a long time without any obvious symptoms, and it is sometimes only detected because of tooth wear.
Can bruxism damage your teeth?
Yes. Prolonged teeth grinding can wear down tooth enamel, cause chips, and increase tooth sensitivity.
When should you be concerned about the symptoms of bruxism?
You should be concerned if the symptoms are recurring, getting worse, or causing pain, tooth wear, or headaches.
How does bruxism affect the temporomandibular joint?
Bruxism can put strain on the temporomandibular joint and cause clicking, pain, or limited movement.
Can stress cause symptoms of bruxism?
Yes. Stress can increase the activity of the jaw muscles and worsen teeth grinding and related symptoms.
What should I do if I suspect I have bruxism?
If you suspect you have bruxism, you should seek an evaluation. Recognizing the symptoms early can help prevent damage to your teeth and jaw joint.
Author
Ville Männistö is an oral and maxillofacial surgeon who specializes in treating disorders of the masticatory muscles, such as bruxism, as well as performing cosmetic botulinum toxin treatments.
His clinical work focuses on understanding facial muscle function, the load on the masticatory muscles, and temporomandibular joint function, as well as identifying the mechanisms underlying symptoms.
He is a member of a research group studying disorders of the masticatory muscles and the effects of botulinum toxin treatments. The research has been published in an international peer-reviewed scientific journal.
Study:
Temporomandibular disorders and masticatory muscle dysfunction – Journal of Craniofacial Surgery
For more information:
PubMed database
Last updated: June 10, 2026
