What Is Bruxism? When Teeth Are Under Pressure at Night

Many people grind their teeth in their sleep without realizing it. Only morning jaw pain, tense muscles, or worn tooth surfaces draw attention to the problem. This unconscious pressing or rubbing of the teeth is called bruxism. It can often be effectively treated with TMD and splint therapy .
In this article, you will learn what exactly is behind it, what causes bruxism can have, and how orthodontic treatment can help.

What does bruxism mean exactly?

The term bruxism describes involuntary teeth grinding or clenchingthat usually occurs at night during sleep – but sometimes also during the day, for example in stressful situations or during intense concentration.
Enormous forces are released in the process: The pressure on the teeth can reach many times the normal chewing force.

Two forms are distinguished:

• Sleep bruxism: unconscious grinding or clenching during sleep

• Awake bruxism: conscious or semi-conscious clenching of the teeth during the day

Both variants can place significant stress on the teeth, the temporomandibular joint, and the muscles.

How does bruxism develop?

The causes of bruxism are varied – often a combination of several factors plays a role.

Stress and psychological strain

Emotional tension, performance pressure, or worries are common triggers. Teeth grinding unconsciously serves to release inner tension – similar to a valve.

Misalignment of teeth or jaw

An uneven bite can lead to the upper and lower jaws not meeting harmoniously. The jaw joint then attempts to compensate for this “incorrect contact” – through grinding or clenching.

Sleep disorders or certain medications

Restless sleep, sleep apnea , or the use of medications (such as antidepressants) can promote bruxism.

Habits and posture

Jaw clenching while working at the computer or during intense concentration occurs more frequently than many people think. Poor posture can also disrupt the interaction between the jaw and muscles.

What symptoms occur with bruxism?

Bruxism often remains undetected for a long time, as the grinding usually occurs during sleep. Nevertheless, there are typical signs that indicate overload:

• Ground down or flattened tooth edges

• Sensitive teeth or tooth pain

• Jaw, facial, or neck pain

• Tense chewing muscles, especially in the morning

• Jaw popping or restricted mouth opening

• Headaches, especially in the temple area

• Sleep problems or daytime fatigue

With prolonged untreated bruxism, tooth damage, cracks in the enamel , or temporomandibular joint disorders (TMD) can occur.

How is bruxism diagnosed?

Diagnosis is usually made through a thorough examination by a dentist or orthodontist.

For detailed assessment, we use:

• Clinical examination of teeth, bite, and muscles

• Analysis of jaw movement and joint function

• 3D scan or functional diagnostics

• If necessary, interdisciplinary collaboration with ENT, pain medicine, or sleep medicine specialists

This allows us to determine whether an orthodontic misalignment or functional cause is present.

How can bruxism be treated?

Treatment depends on the underlying cause. The goal is to protect the teeth, relieve muscle tension, and eliminate the trigger in the long term.

Bite guard or night guard

A custom-made appliance (usually made of clear plastic) protects the teeth from further wear and relieves the chewing muscles. You can read what such an appliance costs in our overview What does a dental splint cost?
It is typically worn at night and can significantly reduce symptoms.

Orthodontic treatment

If misaligned teeth are the cause, orthodontic correction—for example, with aligners or fixed braces —can harmonize the bite system and reduce grinding in the long term.

Relaxation and behavioral therapy

For stress-related bruxism, relaxation techniques such as progressive muscle relaxation, breathing exercises, or biofeedback can help.
Physical therapy can also be beneficial to correct postural issues.

Comprehensive approaches

In some cases, we work with other specialties—such as physical therapy, osteopathy, or pain management—to treat the temporomandibular joint and muscles comprehensively.

What happens if bruxism goes untreated?

If bruxism remains untreated over an extended period, significant damage can occur:

• Tooth damage: Flattened chewing surfaces, cracks, or tooth loosening

• Temporomandibular joint problems: Pain, clicking, or restricted movement

• Muscle tension: Especially in the neck and shoulder area

• Headaches and sleep problems

That is why early evaluation is important—especially if you regularly wake up with a tense jaw or your partner notices nighttime grinding.

Bruxism and TMD—how are they connected?

Bruxism can be a precursor or accompanying symptom of temporomandibular disorder (TMD) .
TMD involves a functional disorder between the temporomandibular joint, muscles, and bite.
Constant clenching or grinding overloads the joints and muscles—which can lead to pain, clicking, or restricted movement.

In our practice in Cologne, we regularly treat patients with TMD-related bruxism and develop individually tailored treatment plans.

Can bruxism be prevented?

Bruxism cannot always be completely prevented, but you can doa lot to reduce the risk:

• Make sure to take regular breaks and relaxation time in daily life

• Avoid caffeine, alcohol, and nicotine before bedtime

• Pay attention to ergonomic posture

• Do not habitually chew on objects or fingernails

• Have tension treated early

An early orthodontic examination can help identify functional causes in time.

Bruxism treatment in Cologne – your experts at JUST KFO

If you suspect that you grind your teeth or frequently have jaw pain in the morning, have the cause professionally evaluated.
At JUST KFO in Cologne , we have many years of experience in diagnosing and treating bruxism and TMD.
With modern methods, custom appliances and a comprehensive approach, we support you on the path to a relaxed jaw and healthy teeth.

Feel free to book an appointment – we take time for you and your questions.

Frequently asked questions about bruxism

What is the difference between sleep bruxism and awake bruxism?

Sleep bruxism occurs unconsciously during sleep, while awake bruxism is usually conscious or semi-conscious during the day through clenching or grinding, often in stressful situations.

Can bruxism permanently damage the teeth?

Yes, untreated bruxism can lead to wear of the tooth structure, cracks in the enamel and even tooth loosening, which severely affects oral health.

What role does stress play in the development of bruxism?

Stress and psychological strain are common triggers for bruxism, as teeth grinding often serves as an unconscious mechanism for releasing inner tension.

How can an occlusal splint help with bruxism?

A custom-made occlusal splint protects the teeth from further wear and relieves the chewing muscles by reducing the pressure during teeth grinding or clenching.

When should you see a dentist or orthodontist about bruxism?

If you wake up in the morning with a tense jaw or pain , your partner notices nocturnal grinding, or you experience signs such as sensitive teeth or jaw popping, professional evaluation is recommended.