A single click, a soft pop on a big yawn, and a gritty crunching feeling can all come from the same jaw joint, and they do not mean the same thing. Most of these sounds are harmless when they come without pain and the jaw opens normally. What changes the picture is pain, catching or locking, or a jaw that no longer opens as far as it used to.
Paying attention to the kind of sound, and when it happens, gives you and your dentist a useful head start.
A disc inside the joint explains most clicks
Each jaw joint, the temporomandibular joint, sits just in front of the ear. The rounded top of the lower jaw (the condyle) moves against the base of the skull, with a small oval disc of fibrous tissue sitting between them like a cushion. When you open wide, the condyle does not just hinge; it also slides forward, carrying the disc with it.
If the disc sits a little too far forward, the condyle can slip under its back edge as you open, giving a click, and slip off again as you close, often with a second, softer click. Dentists call this disc displacement with reduction, meaning the disc goes back into place. It is very common, and in many people it stays stable for years without pain or progression.
Four sounds and what they usually suggest
A clean click on opening, sometimes again on closing
This is the classic disc click described above. Without pain or catching, it often needs nothing more than awareness and avoiding things that aggravate the joint.
A pop only when you open very wide
A dull pop or thud right at the end of a big yawn or a wide bite can happen when the condyle slides forward past a bony ridge in front of the joint. This is common in people with flexible joints. It can be harmless, but if the jaw ever gets stuck wide open, that needs prompt attention.
A grating or crunching feeling
A gravelly or sandy sensation, called crepitus, is different from a clean click. It can reflect changes on the joint surfaces, including wear or arthritis. It is worth having examined, particularly if it comes with stiffness or pain.
A click that has stopped, with less opening
A jaw that used to click and has suddenly gone quiet is not always improving. If the disc has moved far enough forward that it no longer slips back, the condyle can be blocked from sliding, and the jaw may not open fully. This is sometimes called a closed lock. Our article on a jaw that locks open or closed explains this in more detail.
What tends to make a clicking joint worse
Loading the joint more than usual can irritate it. Common contributors include clenching and grinding (bruxism), long stretches of gum chewing, nail or pen biting, very wide yawns, chewing tough foods on one side, and holding the jaw tense during stress or concentration. Jaw muscle tension from clenching is also linked with headaches around the temples. A knock to the jaw can start a click that was not there before.
It was once widely believed that an uneven bite was a main cause of jaw joint problems. Current evidence suggests the bite plays a much smaller role than once thought, and grinding down teeth to adjust the bite is not recommended as a treatment for jaw clicking or pain.
See a dentist if the sound comes with any of these
- pain in front of the ear, in the cheek muscles or at the temples
- the jaw catching, sticking or locking, even briefly
- less opening than before, or the jaw swinging to one side as you open
- a grating noise rather than a clean click
- a sudden change in how your teeth meet
- clicking that began after an injury
A dentist will watch how your jaw moves, feel the joints and chewing muscles, check your teeth for signs of grinding and ask about habits, headaches and sleep. Most people do not need scans. When locking, persistent pain or suspected joint changes are present, imaging or referral to a medical or dental practitioner with a special interest in jaw joint disorders may be arranged.
Gentle care helps most clicking joints
Treatment for jaw joint problems is generally conservative and reversible first. For a painless click, or while waiting for an appointment, these steps can help:
- choose softer foods for a while and cut food into smaller pieces
- skip chewing gum and very chewy foods
- support your chin when you yawn
- keep teeth apart and the jaw relaxed during the day, with lips together
- apply warmth over the joint for ten to fifteen minutes if the muscles feel tight
- resist the urge to click the jaw on purpose, which tends to irritate it
Guided jaw exercises and physiotherapy can improve how the muscles and joint move. Where clicking or pain is linked to night-time grinding or clenching, a custom occlusal splint may reduce load on the joint and protect the teeth, although research on how much splints help jaw joint symptoms is still uncertain. Surgery is uncommon and reserved for a small number of cases that do not respond to conservative care.
What people often ask
Will my jaw click forever?
Not necessarily. Many clicks come and go for years without getting worse, and some settle once clenching or stress eases. A smaller group develop pain or stiffness that benefits from treatment.
Does clicking mean I have TMJ?
TMJ is the name of the joint itself. Clicking can be a sign of a temporomandibular disorder, but on its own, without pain or restriction, it does not mean you need treatment. Our guides to TMJ jaw pain and clicking when you open your mouth go further.
If your jaw has started clicking, catching or aching, our dentists can examine the joint and talk through gentle options first. See our current new patient offers to book a visit.
