Bruxism: when the jaw does not let go
Understanding the causes, impacts and multidisciplinary solutions to relieve an often underestimated disorder
Bruxism is much more common than it seems. Sometimes it appears as teeth grinding during the night; other times, as a clenched jaw during the day, without the person being truly aware of it. In both cases, the problem goes far beyond the mouth: it can affect the temporomandibular joint, the cervical muscles, sleep, posture and general wellbeing.
Although it is often associated with stress, bruxism does not have a single cause. It may be influenced by emotional, neurological, mechanical, postural factors or even certain lifestyle habits. Precisely for this reason, when it persists over time, it should be addressed broadly and not limited only to a dental splint or a simplified explanation.
In this article, we explain what bruxism is, what consequences it can have, which factors may favour it and why a multidisciplinary approach can make a difference.
What is bruxism?
Bruxism is defined as involuntary hyperactivity of the masticatory muscles that occurs outside normal functions such as chewing, speaking or swallowing. It can appear while sleeping or during the day, and it does not always express itself in the same way.
Centric and eccentric bruxism
There are two main forms. Centric bruxism appears as sustained clenching of the teeth, which is more static and silent. Eccentric bruxism, on the other hand, involves friction or lateral sliding movements, which usually wear down dental enamel more.
Daytime and nighttime bruxism
Bruxism can also be differentiated according to when it appears. Some people clench their jaw during the day, especially in situations of concentration, stress or emotional tension. Others do it mainly at night, often without knowing it, until discomfort, dental wear or a close person detects the noise.
Why is it not always detected in time?
Not all bruxism makes noise. Many people do not grind their teeth, but they do maintain excessive jaw contraction for hours. This is why it can go unnoticed for a long time, even when it is already generating muscle tension, headaches or joint discomfort.
Why does bruxism appear?
Bruxism does not usually depend on a single cause. Rather, it appears when different factors combine and promote a persistent or repetitive state of jaw tension.
Psycho-emotional factors
Stress, anxiety, hypervigilance and sustained emotional tension are very common factors. In many people, the jaw becomes an area where internal pressure is physically expressed. The body does not always find a clear way to discharge what it accumulates, and this tension can manifest as teeth clenching or constant activation of the masticatory muscles.
Neurological and sleep-related factors
Nighttime bruxism may be related to micro-awakenings, sleep disturbances or certain changes in neuromuscular regulation. In some cases, it may also coexist with obstructive sleep apnea or other disturbances that fragment rest and promote automatic motor responses.
Mechanical and occlusal factors
An unbalanced bite, missing teeth, a poorly fitted prosthesis or an alteration of the temporomandibular joint can influence how the jaw works. This does not mean that the origin is always dental, but it does mean that the mechanical component deserves assessment.
Postural factors
The jaw does not function in isolation from the rest of the body. The cervical spine, head position, diaphragm and overall posture can influence jaw tone. A forward head posture, sustained cervical tension or poor postural organization can increase the load on the temporomandibular joint.
Habits and lifestyle
Excess coffee, alcohol, lack of rest, late dinners, certain stimulants or a context of physical and mental fatigue can also contribute to maintaining the problem. In some people, even diet or certain nutritional deficiencies may influence sleep quality and muscle regulation.
What consequences can bruxism have?
Although many people experience it as a simple habit or a minor dental discomfort, bruxism can have broader effects when it persists over time.
Dental wear and sensitivity
Constant friction or pressure can wear down enamel, increase dental sensitivity, promote cracks or even compromise existing restorations. Sometimes the wear is visible; other times, the dentist detects it before the patient does.
Overload of the temporomandibular joint
The TMJ can become irritated, painful or lose mobility when the jaw works excessively. Some people notice clicking, locking, difficulty opening the mouth or deviations when moving it.
Muscle pain, headaches and cervical tension
The masseter, temporal and cervical muscles can enter a state of continuous overload. This can result in facial pain, headaches, a feeling of tension in the temples, neck stiffness or jaw fatigue on waking.
Sleep disturbances and fatigue
When bruxism appears during the night, rest can become less restorative. Many people wake up tired, with a heavy jaw, headache or the feeling that they have not truly rested. Fragmented sleep and accumulated fatigue can, in turn, increase stress and perpetuate the problem.
Impact on general wellbeing
Bruxism can affect daily comfort, concentration, mood and the overall feeling of body tension. This is why, even if it starts in the jaw, it rarely stays there.
What role does the dentist play in diagnosis and treatment?
Very often, the dentist is the first professional to detect the problem, whether through tooth wear, TMJ tension or the description of compatible symptoms.
Detection of warning signs
A dental examination may show wear facets, sensitivity, jaw overload or signs compatible with clenching. This helps guide the diagnosis more effectively and assess which other areas should be reviewed.
The splint as a protective tool
An occlusal splint can be very useful to protect the teeth and reduce mechanical load on the joint during the night. However, although it is an important tool, it does not usually resolve the origin of bruxism on its own.
When should the assessment be broadened?
In some cases, the dentist may recommend additional assessment by other professionals, especially when there is persistent pain, sleep disturbance, an important postural component or suspicion of other contributing factors.
Why does a multidisciplinary approach make sense?
When bruxism has several layers — emotional, mechanical, postural, sleep-related or lifestyle-related — it makes sense that treatment may also require several perspectives.
Osteopathy to release tension and improve mobility
Osteopathy can help reduce tension in the jaw, cervical spine, rib cage and diaphragm, supporting better mobility and a more balanced body organization. This can reduce the load on the TMJ and help the body move out of certain patterns of tension.
Physiotherapy to retrain, mobilize and release
Physiotherapy can work on the cervico-mandibular muscles, joint mobility, posture and specific control and relaxation exercises. It can also be very useful for learning strategies to avoid maintaining excessive jaw activation during the day.
Psychology to address stress, anxiety and tension patterns
When bruxism is linked to stress, hypervigilance or difficulty regulating emotional tension, psychology can provide very valuable tools. Identifying triggers, working on self-observation, reducing activation and developing regulation resources helps reduce the pressure that the body discharges through the jaw.
Nutrition to support rest and recovery
Nutrition can complement the approach by reviewing habits that interfere with sleep, nervous system regulation or muscle recovery. In some cases, it may also be useful to assess deficiencies or a diet that is not supporting the body’s overall balance.
What can the person do in daily life?
Beyond professional treatment, the patient plays an important role in the evolution of bruxism. Very often, the first change consists of becoming aware of when the jaw is clenched and in which contexts it happens.
Learning to detect daytime clenching
Becoming aware of whether the teeth are clenched while working, driving, concentrating or feeling stressed can be very useful. Many people discover that they spend hours with their jaw active without realizing it.
Creating relaxation and breathing pauses
Small pauses during the day, broader breathing, gentle jaw and cervical release exercises or end-of-day routines can help reduce the overall activation of the system.
Caring for sleep, stimulants and life rhythm
Sleeping better, reducing stimulants at the end of the day and lowering hyperactivation before going to bed can positively influence the frequency and intensity of bruxism, especially when there is a significant nighttime component.
At Aliantis, we treat bruxism from a global perspective
At Aliantis Sitges, we understand bruxism as the expression of an imbalance that cannot always be resolved through a single discipline. That is why we work from an integrative perspective, where the jaw, posture, sleep, stress and life context are part of the same picture.
Our team of osteopathy, physiotherapy, psychology and nutrition can help you understand what is feeding the problem and which type of approach makes the most sense in your case. Sometimes the goal will be to protect; other times, to release tension; other times, to better regulate the nervous system. The important thing is not to stop only at the symptom.
Because behind a jaw that does not let go, there is often a body and a mind that have been holding tension for too long.
This blog article does not aim to generate new knowledge; it is based on the reading of scientific publications, blog articles and other texts.
