What Causes Sleep Bruxism?

Sleep bruxism, medically known as bruxism, is an involuntary jaw movement usually triggered by increasing daily stress, anxiety disorders, and sleep disturbances. Unknowingly rubbing or tightly clenching your teeth together throughout the night leads to waking up with severe jaw pain and headaches in the morning. Over time, this condition can pave the way for enamel wear and permanent damage to the jaw joint.

Bruxism is an involuntary teeth grinding condition mostly caused by stress and anxiety.
Pain felt in the temples and jaw in the morning is the most common symptom.
If left untreated, it can lead to tooth fractures and jaw joint damage.
Diagnosis is usually made by a dentist observing worn tooth surfaces during an examination.
The most common method for treating bruxism is the use of a custom-made night guard.

What is Sleep Bruxism (Teeth Grinding)?

Bruxism is a condition where a person involuntarily clenches or grinds their teeth, usually during sleep, but sometimes while awake. This widely seen condition in society can affect people of all age groups. A noticeable increase in sleep bruxism cases is observed especially during stressful periods like an intense work pace, exam weeks, or major life changes. The mind essentially converts the day's fatigue and tension into a physical reaction in this way.

Sleep bruxism is classified as a sleep-related movement disorder. Throughout the night, jaw muscles contract with a much stronger force than normal. The force applied to the teeth and jaw joint during the night is many times greater than what we use for chewing during the day. This excessive load disrupts the structure of the teeth over time and damages the jaw joint. If you have additional sleep problems like sleep apnea or night snoring, teeth clenching complaints are known to be more severe. Most patients are not even aware that they clench their teeth all night and only realise the situation through the feeling of fatigue when they wake up in the morning or when their partner hears the grinding sound.

Causes and Risk Factors

Although there is no single cause for teeth clenching, it is thought to emerge from a combination of physical, psychological, and genetic factors. The most fundamental trigger is the stress encountered in daily life and unmanageable anxiety. The mind tries to release the day's tension by contracting the jaw muscles during sleep. For this reason, bruxism is seen much more frequently in people managing a high-pressure lifestyle or the bustling daily commute in a busy city like Istanbul, as well as those experiencing anxiety disorders.

In addition to this, dental occlusion disorders (malocclusion) are also an important physical cause. The upper and lower jaw not closing in perfect harmony causes the muscles to constantly try to find the right position, resulting in spasms. Excessive caffeine consumption, smoking, and alcohol consumed right before bed also decrease sleep quality and increase the risk of bruxism. Furthermore, teeth grinding can be among the side effects of certain antidepressant medications. People with a family history of sleep bruxism have a higher probability of experiencing this problem due to genetic predisposition.

What Are the Symptoms of Bruxism?

The symptoms of sleep bruxism vary depending on the severity of the problem and how long it has been going on. While no symptoms may be felt in mild cases, problems that seriously reduce the quality of daily life arise in advanced stages. The most typical sign is a dull ache felt in the face, neck, and temple area when you wake up in the morning. This feeling of fatigue in the jaw muscles can also spread throughout the day.

Over time, the tooth enamel wears away, exposing the more sensitive dentin layer underneath. This causes you to feel a sharp ache when consuming hot or cold foods. If cold drinks make your teeth ache, the underlying cause might be clenching your teeth throughout the night. Clicking or grating sounds coming from the jaw joint (temporomandibular joint), inability to fully open the mouth, or difficulty during chewing are also common complaints.

Jaw pain and fatigue in facial muscles that become prominent in the mornings.
Pains that resemble earaches but actually originate from the jaw joint.
Flattening of the teeth, chipping, or cracks at the edges.
Tooth marks or irritation on the inner cheeks.
Tension-type headaches concentrated in the temples.

How is it Diagnosed at the Hospital?

A diagnosis of bruxism can usually be easily made during a routine dental examination. Your dentist will carefully evaluate the wear surfaces on your teeth, enamel cracks, and involuntary bite marks inside your cheeks during an intraoral examination. By manually examining your jaw joint, they check for tension in the muscles, asymmetry, and sounds that occur when the mouth opens and closes.

During the diagnostic process, a panoramic dental X-ray may be taken to clearly see the extent of the damage to the teeth and the condition of the jawbone. This X-ray helps to detect possible deformations on the joint surfaces. Your dentist will also ask you various questions about your sleep patterns, daily stress levels, and the character of the pain you feel in the mornings. In very rare and complex cases, patients may be referred to a sleep laboratory (polysomnography) to understand whether other conditions like sleep apnea accompany bruxism. However, in the vast majority of cases, a clinical examination and radiological imaging performed by a dentist are sufficient for a definitive diagnosis.

Bruxism Treatment and the Use of Night Guards

Bruxism treatment aims to stop the damage to the teeth, alleviate jaw pain complaints, and protect the jaw joint. The most fundamental and common step of the treatment is the use of a night guard. Your dentist will take an impression of your mouth and prepare a custom-fitted guard, usually made of clear, hard acrylic, for your upper or lower jaw. This guard stops wear by preventing the teeth from contacting each other during the night and reduces the tension in the jaw muscles.

Supportive methods you can apply at home also speed up the treatment process. Applying a warm compress to the jaw muscles with a warm towel before bed, limiting caffeine consumption, and doing relaxation exercises before sleep help the muscles relax. Opting for a soothing herbal tea instead of late-night Turkish tea or coffee can also make a significant difference. If your teeth clenching problem stems from a malocclusion in the teeth, orthodontic treatments or restoring worn teeth with porcelain crowns may be necessary. In cases caused by excessive stress, psychological counselling or muscle relaxant medication support can be added to the process under a doctor's supervision. In advanced muscle spasms, Botox injections applied to the jaw muscles can also offer an effective solution by weakening the muscle's contraction force.

Complications and Risk Groups

When teeth clenching is left untreated for a long time, it can lead to irreversible damage to the mouth and jaw structure. One of the most serious complications is temporomandibular joint (TMJ) dysfunction. The jaw joint disc can slip out of place, which can cause the mouth to lock or become unable to open at all. In addition, deep cracks can form in teeth constantly exposed to pressure, tooth roots can become inflamed, and ultimately, tooth loss can occur.

Professionals working under intense stress, students experiencing exam anxiety, and people with a competitive nature rank first among the risk groups. Those with disrupted sleep patterns, shift workers, and individuals who consume high amounts of coffee or energy drinks are also at high risk for bruxism. Additionally, episodes of teeth grinding are frequently encountered in children with hyperactivity disorders. Bruxism that is not intervened with in time can also pave the way for gum recession and jawbone melting, leading to the need for more complex treatments like implants in the future.

When to See a Doctor

Although sleep bruxism may initially seem like a simple habit, it is necessary to see a specialist without wasting time when certain symptoms appear. If you are experiencing head and neck pains that do not go away in the morning, or if you notice visible shortening or fractures in your teeth, you should definitely book an appointment with a dentist. Early intervention protects your teeth and jaw joint from permanent damage.

Medical evaluation is essential if you experience any of the following symptoms:

A severe clicking or grating sound coming from your jaw joint when opening and closing your mouth.
Your jaw suddenly locking or being unable to open your mouth fully.
The onset of extreme sensitivity in your teeth to hot, cold, or sweet foods.
Feeling fatigue and severe pain in the jaw muscles during chewing.
Noticing bleeding, recession in your gums, or looseness in your teeth.

If your jaw locks and you become unable to close your mouth, or if sudden swelling and severe pain develop to a degree that prevents you from breathing, you should call 112 without waiting or visit the nearest emergency department.

The Process at BHT CLINIC

At the BHT CLINIC İstanbul Tema Hastanesi Oral and Dental Health department, the diagnosis and treatment processes of our international and local patients presenting with bruxism complaints are meticulously carried out by our expert dentists. During your first examination, detailed intraoral checks are performed, and if necessary, a panoramic X-ray is taken to evaluate the condition of your jaw joint. Thanks to our advanced technological infrastructure, the diagnostic process is completed quickly and comfortably.

Measurements for a night guard perfectly matched to our patients' jaw structure are taken on the same day and rapidly prepared in a laboratory environment. If you have worn or broken teeth, your teeth are restored to their former health with restorative procedures like zirconium crowns or smile design. We also offer comfortable treatment options under general anaesthesia for our patients who experience dental anxiety. In emergencies such as jaw locking or severe toothache, you can apply to our hospital's 24/7 emergency department.

Frequently Asked Questions

Does sleep bruxism go away on its own?

Mild teeth clenching cases that emerge during stressful periods may decrease when the stress factor is eliminated. However, chronic bruxism usually does not go away on its own and requires protective treatments like a night guard to prevent damage to the jaw joint.

Does a night guard completely stop teeth grinding?

A night guard does not completely stop the act of teeth clenching, but it prevents wear and breakage by stopping the teeth from contacting each other. At the same time, it largely alleviates jaw pain complaints in the mornings by balancing the load placed on the jaw muscles.

Which department should I visit for bruxism treatment?

For teeth grinding and jaw joint disorders, you need to apply to the Oral and Dental Health departments of hospitals. Dentists will create the most appropriate treatment plan for you by performing the necessary examinations.

Does clenching teeth alter the shape of the jaw?

Severe bruxism that continues for many years and is left untreated can cause the chewing muscles (masseter muscle) to overdevelop. This can lead to the lower part of the face looking more square and broad, affecting the aesthetic appearance of the jawline.

What is good for stress-induced teeth clenching?

Taking a warm shower before sleep, reducing caffeine intake, applying a warm compress to the jaw muscles, and doing breathing exercises help relax the muscles. However, these methods are supportive of the night guard treatment recommended by your dentist.

To plan your treatment process and get support from our expert physicians, you can take the first step for your health by booking an appointment.

This article is for informational purposes only; please consult your physician for diagnosis and treatment.

What Causes Sleep Bruxism (Teeth Grinding)?