What TMD means
TMD stands for temporomandibular disorder, also known as CMD, and describes a disturbance in the interplay of jaw joint, chewing muscles and teeth. When these three do not work together harmoniously, complaints arise that cannot always be immediately attributed to the jaw, because they can radiate into the head, neck and shoulders.
The jaw joint is one of the most heavily used joints in the body. It moves many thousands of times a day when you speak, chew and swallow. It is guided by a fine set of chewing muscles and cushioned by a small cartilage disc. When this system falls out of balance, for example because the muscles are constantly overloaded or the disc no longer glides smoothly, we speak of a dysfunction. It is not a rare exception but a common pattern of complaints, and one that can be treated well in most cases.
Causes and triggers
A TMD rarely has a single cause. Often several factors act together and reinforce one another:
- Night-time grinding and clenching (bruxism). The most common mechanical overload. You can read more in our article on teeth grinding.
- Stress and ongoing tension, which often lead, without you noticing, to clenching the teeth during the day.
- A bite that does not fit, for example from a filling that sits too high, a new crown or missing teeth that shift chewing to one side.
- Injury or overstretching, for instance from a blow to the jaw, an accident or a very long treatment with the mouth held wide open.
- Unfavourable posture in the neck and shoulders, because the jaw and the cervical spine are closely linked through the muscles.
Because the triggers are so varied, a precise functional analysis always comes first. Only once it is clear which factors are at work can treatment be targeted properly.
Signs and how to recognise a TMD
A TMD often shows itself not as one clear symptom but as a combination of several complaints that are not, at first, connected with the jaw at all. Typical indications are:
- Clicking or grating in the jaw joint when opening or closing the mouth.
- Pain when chewing, or the chewing muscles tiring quickly with hard foods.
- Morning tension in the chewing muscles, often a sign of night-time clenching.
- A restricted or asymmetric mouth opening, sometimes with a feeling that the jaw briefly catches.
- Recurring headaches and neck pain, frequently at the temples or behind the eyes.
- Ear noises or a feeling of pressure in the ear without an identifiable cause at the ear, nose and throat specialist.
A single one of these signs is not yet a diagnosis. But when several occur together and persist, an assessment is worthwhile.
How we find the cause
Before we treat, we establish where the complaints come from. We describe the exact process on the TMJ treatment page. A clinical functional analysis includes:
- Palpating the chewing muscles and the jaw joint for tenderness and hardening.
- Assessing the joint movement on opening and closing, including any clicking and grating.
- Measuring the mouth opening and checking whether the jaw moves straight or deviates to one side.
- Checking the bite and the contact points between upper and lower jaw, often with models or a digital bite registration.
This gives a clear picture of whether the muscles, the joint or the bite are at the forefront. Where the findings are unclear or there is a suspicion of a change to the disc, imaging can also be useful. Treatment can then be targeted, rather than simply easing the symptom.
Treatment options
We treat a TMD step by step and always begin with the gentle, reversible measures. Only once these have been exhausted do further steps come into question.
Splint therapy
The most common and gentlest measure is a splint worn at night. It relieves the joint, decouples the bite and protects the teeth from the consequences of grinding. Which type of splint suits which purpose is explained in our article on the splint comparison and on the night guard page.
Physiotherapy and exercises
Alongside this, physiotherapy exercises and targeted stretches release the tense chewing muscles and improve mobility. We show you simple exercises for home and, where needed, work together with physiotherapists who specialise in the jaw.
Stress management
Where stress and tension play a part, addressing the triggers is part of the treatment. Relaxation techniques, conscious breaks and paying attention to the resting position of the jaw often achieve more than any mechanical measure on its own.
Adjusting the bite
If there is a demonstrably disruptive bite discrepancy, for example a filling or crown that sits too high, this can be corrected in a targeted way. We only carry out such adjustments to the bite once the functional analysis clearly justifies them, because they cannot be reversed.
This is exactly why we begin with reversible measures. A splint can be adjusted or left off at any time, a ground-down tooth or a newly set bite position cannot. We therefore move from the gentle to the more invasive, and not the other way round.
Aftercare and what you can do yourself
A great deal of what eases the complaints lies in your own hands in daily life:
- Mind the resting position. When relaxed, the rows of teeth do not touch and the tongue rests lightly against the palate. Do not clench your teeth during the day.
- Warmth loosens. A warm compress on the cheek relaxes cramped chewing muscles, especially in the morning.
- Spare the joint in acute phases. Avoid very hard or chewy foods for a while and avoid yawning wide with full force.
- Keep up the exercises. The benefit of physiotherapy lasts as long as you do the exercises regularly.
- Notice your tension. Small reminders through the day help you catch and release the unconscious clenching.
When to come to us
If complaints in the jaw joint or chewing muscles persist for more than a few weeks, keep recurring or restrict the opening of your mouth, a dental assessment is worthwhile. The same applies if recurring head, neck or ear complaints appear together with a tender jaw. The earlier the cause is recognised, the easier it is to counteract before a lasting pain pattern becomes established. If you are unsure, book an appointment. We carry out the functional analysis and discuss the right steps with you.