Often in our office, patients complain about unexplained morning headaches, dull pain in the jaw area, or tooth sensitivity to hot and cold. Only when we ask them whether their partner has ever mentioned that they produce scratching sounds with their teeth at night do the puzzle pieces usually fall into place.
It is bruxism, the unconscious clenching and grinding of teeth during sleep.
Bruxism can also occur during the day, as unconscious jaw clenching while awake, most often during moments of intense concentration or tension. However, it is far more common and dangerous at night, when there is no conscious control over the muscles, so we focus on this nocturnal form in this text.
We want to clarify for you what exactly happens in your mouth while you sleep, why this problem occurs, and what specific steps we take to stop further deterioration of your teeth and joints.
What is nocturnal bruxism and how much force do your teeth endure?
To understand the seriousness of this condition, we must first look at the mechanics of our jaw. When we normally chew food, the force that our teeth endure averages between 20 and 40 kilograms.
This is the pressure for which our chewing system is biologically designed. However, during episodes of nocturnal bruxism, when there is no conscious muscle control, that force can exceed 100 kilograms.
Your teeth then endure enormous, unnatural pressure.
Enamel, which is otherwise the hardest substance in the human body, begins to crack and wear under such stress. The problem is that all of this happens while you sleep, so most patients are not even aware they have a problem until they notice visual changes on their teeth or until they begin to feel the first joint pain.
Why do we actually grind our teeth?
There is no single cause for bruxism. In our daily practice, we notice that it is most often a combination of multiple factors.
Through case history and conversation with the patient, we generally identify the following causes:
Chronic stress and anxiety
This is absolutely the leading cause. Our nervous system processes all daily tensions at night. Retained tension is very often channeled through increased muscle tone, and the chewing muscles (masseters) are among the strongest in the body. According to clinical data regularly highlighted by the American Sleep Foundation, high stress levels directly correlate with the frequency and intensity of nocturnal grinding.
Improper bite (Malocclusion)
If your upper and lower teeth do not contact each other properly, a so-called traumatic contact is created. Our brain registers this irregularity as an irritation and instinctively sends a signal to the jaw muscles to “grind” and remove that irritation. This happens completely unconsciously and leads to chronic friction.
Sleep apnea and breathing disorders
Conditions in which there is a brief interruption of breathing during sleep are closely related to bruxism. When the body is deprived of oxygen, the brain wakes in a state of mild panic and sends signals to the jaw muscles to move forward to open the airways. That sudden movement is often accompanied by strong teeth clenching.
Life habits before sleep
Excessive caffeine intake, alcohol consumption, or smoking in the evening hours directly stimulate the central nervous system. Alcohol additionally disrupts sleep architecture, making bruxism episodes significantly more frequent and intense during lighter sleep phases.
Certain medications
It is worth knowing that some medications can also trigger or intensify bruxism. This is most often associated with certain antidepressants, particularly from the so-called SSRI class, but also with some stimulants. If you are on such therapy, it is important that you mention this during your examination. Do not stop or change prescribed medications on your own; rather, discuss it with the doctor who prescribed them, and we will meanwhile take care to protect your teeth.
Bruxism in children and adults
Although many think bruxism is exclusively an adult problem, it is actually very common in children. For this reason, we observe and treat these two cases differently.
In children
Grinding most often occurs during the period of tooth eruption and tooth replacement, while the jaw and bite are still maturing. It is often of a milder nature and many children simply outgrow it over time as their teeth and jaw joint develop. In the youngest children, we therefore approach more cautiously and primarily through monitoring, as hard splints are not always suitable for a jaw that is still growing. We advise parents to mention to us if they hear grinding at night or if the child has jaw pain in the morning, so we can assess in time whether any intervention is needed at all.
In adults
In adults, the situation is more serious. Here, bruxism is most often associated with chronic stress, lifestyle habits, certain medications, or sleep breathing disorders, and the consequences accumulate over years. Since the jaw and teeth in adults are fully formed, enamel damage, joint problems, and tooth wear require more active treatment, most often with a protective splint, bite correction, and if necessary, replacement of lost tooth structure.
Clear symptoms: How to recognize bruxism?
As we mentioned, since the process occurs during sleep, the symptoms we see in the office are mostly consequences that develop after months or years of grinding.
The most common signs include the following changes:
- Flattened and shortened teeth: Teeth lose their natural contour and become completely flat. In severe cases, teeth wear down so much that the lower third of the face becomes aesthetically and functionally reduced.
- Enamel cracking and sensitivity: Due to strong pressure, small pieces of enamel at the edges of teeth crack. The tooth loses its protective layer, dentin is exposed, so teeth become extremely sensitive to cold water or sweet food.
- Wedge-shaped erosions at the tooth neck: The clenching force is transmitted to the tooth neck, where enamel is thinnest. Here, enamel prism cracking occurs and deep wedge-shaped indentations form, in the immediate vicinity of the gums.
- Pain and popping in the jaw joint: The temporomandibular joint (TMJ) endures enormous stress. Patients complain of pain in front of the ear, difficulty opening the mouth in the morning, and a specific clicking or cracking sound when chewing.
- Enlarged facial muscles: With chronic bruxism, facial muscles become hypertrophied (enlarged) due to constant strain during the night, which in extreme cases can give the face a square shape.
How do we diagnose the problem in our office?
When you come for an examination, our first step is a detailed visual inspection of all teeth.
We look for specific wear patterns (abrasion) that do not anatomically match normal food chewing.
After that, we palpate your facial and neck muscles to check for tension and the presence of trigger points. We also examine the movements of your lower jaw and the function of the joint itself.
Treatment of bruxism: Our therapeutic methods
When we determine that you suffer from bruxism, our first goal is to mechanically protect your teeth from further deterioration, and then to relieve stress on the muscles and joint. Depending on the cause and degree of damage, we apply the following therapies:
Fabrication of an occlusal splint (bruxism guard)
This is the most common, fastest, and most effective way to protect teeth. The splint is a clear plastic guard that is made based on an impression of your teeth. It is worn exclusively at night. Its purpose is not to break you of your grinding habit, as this is neurologically almost impossible to achieve with a splint alone, but rather to serve as protection.
When you clench your jaw at night, your teeth do not grind against each other, but slide over the plastic. At the same time, the thickness of the guard slightly separates the jaws, placing the muscles and joint in a more relaxed position.
Bite correction and orthodontic therapy
If during the examination we determine that the underlying cause of your bruxism is poor contact between teeth, we must correct the bite. Sometimes this is a simple selective grinding of small contact points that cause irritation. In other situations, we recommend orthodontic therapy with fixed appliances or clear aligners to align your teeth and permanently relieve jaw stress.
Replacement of lost tooth structure
When bruxism has already caused serious consequences and significantly shortened teeth, it is necessary to restore them to their original condition. We achieve this by fabricating composite buildups, ceramic veneers, or metal-free crowns. This not only restores the aesthetics of your smile, but also reestablishes proper bite height, which directly relieves the joint from pressure.
Addressing underlying triggers
The medical approach requires looking at the bigger picture. We advise patients to reduce caffeine intake, alcohol consumption, and screen time before bed. If we suspect that bruxism stems from breathing problems or apnea, we will refer you to a specialist physician for further testing.
Use of muscle relaxants and botox
In extreme cases, where a patient experiences severe spasms and pain despite wearing a guard, therapy may include temporary use of muscle relaxation medications. In modern dental practice, for pronounced enlargement of the masseter muscle, botox injection directly into the muscle significantly reduces the strength of its contraction at night, while normal chewing function during the day remains completely preserved.
The longer you delay a solution, the more serious the damage to your teeth becomes, and the more complex the treatment.
If you recognize morning jaw pain or notice that the edges of your teeth have become flat and sensitive, contact us and schedule an examination at 065 8755449. Our task is to determine your exact condition, provide appropriate protection, and prevent further complications.
Note: This text is for informational purposes and does not replace a dental examination.