Many people ask, what is bruxism, especially after noticing jaw discomfort or unusual wear on their teeth. Bruxism is the habit of teeth grinding or involuntary clenching. It can happen during sleep or while you are awake.
Although it may seem minor at first, ongoing grinding can place heavy pressure on the teeth and jaw. Over time, this can affect comfort, function, and overall sleep quality.
Understanding how it develops and what signs to look for can help reduce further damage and support better long-term oral health outcomes.
Types Of Bruxism
Bruxism is generally divided into two main types.
Awake Bruxism
Awake bruxism happens during waking hours. It is often linked to stress, anxiety, or muscle tension. Some people clench their teeth when concentrating, driving, or working.
You may not notice it at first. Many patients report they only become aware when someone points it out or when jaw pain develops.
Sleep Bruxism
Sleep bruxism occurs during sleep and is considered a movement disorder. It is sometimes connected to sleep disorders such as sleep apnoea. Changes in sleep patterns can also influence how often people grind their teeth.
Because it happens unconsciously, it can be harder to detect without a professional check.
Common Signs And Symptoms
Teeth grinding symptoms can vary from mild to more noticeable. The most common include:
- Jaw pain or stiffness
- Headaches, especially in the morning
- Worn tooth enamel
- Tooth wear or flattened edges
- Sensitive teeth
- Loose teeth in severe cases
Grinding creates strong occlusal forces between the upper and lower teeth. Over time, this pressure can thin worn tooth enamel and expose the inner layers of the teeth.
Some people also notice discomfort in the temporomandibular joint, which connects the jaw to the skull. This can lead to clicking sounds or limited jaw movement.
Risk Factors And Causes
Bruxism does not have one single cause. Several risk factors may increase the likelihood of teeth grinding.
Emotional stress and anxiety are common triggers. Muscle tension in the jaw muscles can build throughout the day and continue during sleep.
Certain medications and psychiatric disorders have also been associated with bruxism. In rare cases, neurological conditions such as Huntington’s disease may be linked.
Sleep disorders, including sleep apnoea, can contribute as well. Poor sleep hygiene may worsen grinding by disrupting normal sleep cycles.
Each case is different, which is why a careful review of medical history is important.
How A Dentist Can Diagnose Bruxism
To diagnose bruxism, a dentist will perform a comprehensive assessment. This usually involves checking for tooth wear, changes in bite, and signs of excessive clenching.
They may ask about sleep quality, stress levels, and whether anyone has heard you grind your teeth at night. Dentists also look for tenderness in the jaw and surrounding muscles.
In some situations, further evaluation of sleep patterns may be recommended if sleep disorders are suspected.
Treatment Options And Management
Bruxism treatment depends on the severity and the underlying cause. The goal is to reduce pain, protect the teeth, and prevent further damage.
One common approach is an occlusal splint. This custom device is worn over the teeth at night. It helps absorb occlusal forces and reduce direct contact between the upper and lower teeth.
An occlusal splint does not stop grinding completely, but it can provide short-term relief and protect against tooth wear. For many people, it forms part of a long-term solution.
Stress management and practical lifestyle changes can also play an important role in reducing clenching and supporting overall jaw comfort. Improving sleep hygiene, limiting caffeine late in the day, and practising relaxation techniques can support better sleep quality.
In selected cases, other therapies or short courses of muscle relaxants may be considered. These are used carefully and only when appropriate.
Addressing contributing factors, such as anxiety or certain medications, may also reduce clenching.
Early assessment and practical management can help protect your teeth and jaw from the effects of ongoing grinding. If you are concerned about jaw discomfort, tooth wear, or possible bruxism and would like personalised guidance, you can book a consultation with us at Balmoral Dental Centre or call (07) 3113 9789. A dentist can assess your symptoms and discuss appropriate options to support your comfort and long-term oral health.
Resources
“Mayo Clinic Staff (2025). ‘Sleep apnea’. Mayo Clinic, 09 December. Rochester, MN: Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/sleep-apnea/symptoms-causes/syc-20377631”
“Cleveland Clinic (2023). ‘Bruxism (Teeth Grinding)’. Cleveland Clinic, 18 December. Cleveland, OH: Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/10955-teeth-grinding-bruxism”