Your jaw hurts — here's what physiotherapy actually does about it

A patient asked me recently whether physiotherapy could really do anything for a jaw, or whether it could be a dental problem. It is a fair question. Most people have never been told that the jaw is a joint like any other — it has a capsule, a cartilage disc, muscles that move it, and a coordination pattern that can be retrained when it goes wrong. It responds to hands-on treatment and exercise about as well as any other joint its size does. So rather than write another article about what temporomandibular disorder is, I want to walk through what we actually do about it.

One piece of anatomy first, because it shapes the whole plan. Sensation from your jaw and face runs through the trigeminal nerve, and the nerves from the top three segments of your neck arrive at the same relay station in the brainstem, synapsing onto shared second-order neurons. Your brain gets the message that something in that region hurts without a reliable return address. That is why an irritated upper neck joint can be felt as jaw ache, ear fullness or temple pain, and why I have never treated a jaw successfully while ignoring the neck attached to it. People with jaw disorders measurably tend to have less neck rotation and lower endurance in the deep neck flexors, and their neck-related disability tracks closely with their jaw-related disability.

So the first appointment measures both. I record how far you open — around 40 millimetres, or three of your own stacked fingers, is typical — and whether the jaw deviates or corrects itself on the way down. I palpate the masseter and temporalis and the muscles behind them, note where any clicking sits in the range, then assess upper neck mobility, deep neck flexor endurance, and whether firm pressure on those upper segments reproduces your face pain. That last test matters more than anything else in the exam, because a yes changes the treatment plan immediately. I write the opening measurement down every visit, since a five millimetre gain is the accepted threshold for a change that means something rather than a good day.

The hands-on portion is usually the part people are surprised by. Some of it is external — sustained pressure and gliding through the masseter and temporalis, gentle distraction and gliding of the joint itself to restore the slide it has stopped doing. Some of it is intraoral, done gloved and with your consent, because the deeper chewing muscles cannot be reached any other way and they are frequently the actual source of the ache. And a meaningful portion is neck work — mobilisation of the upper cervical segments and release through the suboccipital muscles. That is not a detour. One trial found that treating the atlanto-occipital joint and the suboccipital muscles produced immediate gains in mouth opening and reduced tenderness in the chewing muscles themselves, without anyone touching the jaw.

Then there is the part you take home, which is where most of the durable change comes from. Controlled opening drills with the tongue resting on the palate, to rebuild the hinge before the slide. Light isometric holds in each direction to restore load tolerance without provoking the joint. Deep neck flexor and postural endurance work, because a neck that fatigues by mid-afternoon will keep feeding the jaw. And some unglamorous habit work: lips together, teeth apart, tongue on the roof of the mouth is the resting position most people have quietly lost, and retraining it does more than any stretch. Alongside that, two or three weeks of deliberate load management — softer food, no gum, no yawning wide into the pain — followed by a planned return to normal chewing rather than an indefinite soft diet.

What should you expect from all that? Honest answer: reasonable odds, on a fairly quick timeline, from evidence that is promising rather than airtight. The best meta-analysis in this area found manual therapy — alone or combined with exercise — produced encouraging results for jaw pain and opening, while exercise on its own was not clearly better than other conservative care, and the authors were candid that the quality of the underlying trials limits how firmly any of it can be stated. A randomised trial comparing a bite splint against home exercise against supervised in-clinic exercise found all three helped, with no clear winner on joint sounds — but the supervised exercise group also improved on pain, neck disability and mood. Practically, most people I see notice a change within three or four visits across four to six weeks. If nothing has moved by then, the plan was wrong and it needs revisiting rather than repeating.

A few limits worth stating plainly. Physiotherapy and a night guard are not competitors, and if your dentist has made you one it should stay in the mix — reversible treatments first, always, which is also why I am cautious when someone is offered permanent changes to their bite early on. A jaw that suddenly locks closed and will not open past about two fingers is a different problem and needs co-management rather than more exercise. And one genuine caution: new jaw pain that comes on with chewing in someone over fifty, alongside scalp or temple tenderness, headache or any change in vision, needs same-day medical assessment, not a physiotherapy appointment.

Hopefully you found this information helpful. Feel free to contact us for more information or questions! If there are topics you would like to see us cover, definitely drop us an email and it may be featured during a future blog post.

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