Plenty of people hear a small click from just in front of the ear every time they yawn or take a big bite, and have done for years. If that click comes with no pain, no catching and no loss of movement, it is generally treated as a harmless variation rather than a problem to fix. What changes the picture is the company the click keeps: soreness, a jaw that sticks, or a bite that suddenly feels different.
Where the noise actually comes from
Each temporomandibular joint (TMJ) has a thin pad of fibrous cartilage, the articular disc, sitting between the ball of the lower jaw and the socket in the skull. Its job is to let the joint glide smoothly. In a sizeable minority of adults the disc rests a little forward of where textbooks place it; one MRI study found this in about a third of people with no jaw symptoms at all. When the mouth opens, the jaw slides under the disc and recaptures it, and that recapture is the click you hear or feel. Some people get a second, softer click on closing as the disc slips forward again. Dentists call this pattern disc displacement with reduction.
Why the disc sits forward in the first place is not fully understood. Loose ligaments, past knocks to the jaw, and long periods of clenching or grinding are all thought to play a part, and joint surfaces also change gradually with age. For many people the cause is never pinned down, and it does not need to be if nothing else is wrong.
A painless, stable click can usually be left alone
Joint sounds are common in people who have no other symptoms, and long-term studies suggest most people with this kind of click do not go on to develop pain or locking. Current guidance on temporomandibular disorders leans away from treating a sound on its own. Splints, bite adjustments or other procedures aimed only at silencing a painless click are not recommended, because the click often persists anyway and the treatment carries its own costs and risks.
It is still sensible to mention it at your next check-up. Your dentist or OHT can note how wide you open and whether the jaw moves in a straight line, which gives a baseline to compare against if anything changes later.
Signs that the click deserves a closer look
Book an assessment rather than waiting for a routine visit if you notice any of these alongside the sound:
- Aching in the joint, temple, cheek muscles or around the ear, particularly when chewing.
- A jaw that catches partway through opening and needs a wiggle to free it.
- A click that has recently stopped, but now you cannot open as wide as before. This can mean the disc is no longer slipping back into place.
- The jaw swinging noticeably to one side as you open.
- Your back teeth meeting differently from how they used to.
- A grating or crunching sound rather than a single click, especially if it is new.
A jaw that locks open and will not close, or a sudden change after a blow to the face, should be seen the same day by a dentist or an emergency department.
Clenching and grinding often sit in the background
The muscles that close the jaw are strong, and when they work overtime through the night or during a stressful day they load the joint repeatedly. Grinding and clenching are common partners of joint noise and jaw pain, and many people are unaware they do it. Clues include waking with a tired or tight jaw, flattened or chipped tooth edges, scalloped marks along the sides of the tongue, or a partner hearing grinding at night. There is a fuller discussion of how stress shows up in the teeth and jaw elsewhere on our blog.
Daytime clenching is easy to miss. A useful habit is to check in a few times a day: lips together, teeth apart, tongue resting lightly on the roof of the mouth. If your teeth are touching while you read this, that is worth noticing.
Small changes that settle an irritated joint
When the joint feels sore or tired, giving it a quieter week often helps. Cut food into smaller pieces, choose softer meals for a while, and avoid gum and very chewy foods. Try not to bite into whole apples or tall burgers that need a wide gape. A warm cloth over the cheek muscles for ten minutes can ease tightness. Gentle, controlled jaw movements can also help some people, and our guide to jaw exercises for self-care walks through ones that are low risk. Stop any exercise that increases pain.
Where a night guard fits in
If grinding or clenching during sleep is part of the picture, a custom-made hard splint, often called a night guard, can spread the load and protect the teeth. Some people report that their jaw muscles feel less tired in the morning. A splint is not designed to stop the click, and it may or may not change the sound. It is worth keeping it clean and checking its fit at reviews, and our article on caring for a night guard covers the basics.
Where pain or restricted movement persists, the usual path is still conservative: self-care and jaw exercises, physiotherapy with someone experienced in jaw problems, and attention to sleep and stress. Splints are widely used, but evidence that they relieve long-term jaw pain is mixed, and a 2023 international guideline in the BMJ (Busse and colleagues) made a conditional recommendation against relying on them for chronic jaw pain. Imaging and referral to an oral medicine or maxillofacial specialist are kept for cases that do not settle or where something unusual is suspected. Surgery on the joint is uncommon. For a broader view of jaw pain itself, see our overview of TMJ pain causes and treatment.
Common questions
Does a clicking jaw mean I have TMJ disorder?
Not in the sense most people mean. A click from disc displacement with reduction is technically classed as a joint disorder, but when it is painless it is very common and usually needs no treatment. Pain, limited movement or locking are what usually prompt care.
Will the click get worse over time?
For most people it stays much the same for years. A small number progress to catching or locking, which is why any change in how the jaw moves is worth reporting.
My jaw clicked for years and has now gone quiet. Is that good?
Sometimes the click fades and movement stays normal, which is fine. If the click stopped and at the same time you cannot open as far, have it checked, as the disc may no longer be returning to place.
Getting it checked
If your jaw clicks and is also sore, catching or changing your bite, our dentists can examine the joint and muscles and talk through options, including whether a splint would help. Read more on our general dentistry page or see current offers before you book.
This article is general information only and is not a substitute for an individual dental or medical assessment.
