Pain & Sensitivity

Toothache that spreads to the jaw and ear

Where you feel the pain is not where it is coming from

If your ear hurts but your ear examination came back clear, the next place to look is your mouth. Toothache does not stay where it starts; it spreads to the jaw, the ear and the temple. The jaw joint and sinusitis also cause pain in the same area. On this page we explain how to tell the three apart, when you need to act quickly and which doctor to see.

Short answer

Toothache spreads to the jaw and ear because the teeth, the jaw joint and part of the ear carry their signals along the same nerve; the brain cannot tell exactly where the signal is coming from. This is called referred pain. The lower molars send their pain to the ear and the angle of the jaw, and the upper back teeth to the temple and cheek. Pain from a jaw joint problem and from sinusitis in the upper jaw sinus also settles in the same area. What separates these three is not where the pain is, but what makes it worse.

What tells them apart: Not where the pain is, but what makes it worse
Where pain spreading to the ear comes from: The lower molars and the jaw joint
When to see a dentist: Pain lasting more than two days
Emergency signs: Facial swelling, a high temperature, being unable to open your mouth

Medically reviewed by Bilge Ilgın, Dentist · ImplantologyLast reviewed 2026-08-31

Why pain is not felt where it comes from

Sensation from the face, the teeth and the jaw joint passes through a single nerve: the trigeminal nerve. The lower teeth, the area in front of the ear and part of the outer ear canal share the same branch of this nerve. The signal that reaches the brain carries no 'this tooth' label; the brain knows the area, not the exact spot. When the source and the place where the pain is felt are different, this is called referred pain.

The second reason lies in the structure of the tooth itself. The thin connective tissue that attaches the tooth to the bone contains fibres that report position; that is why, when you press on a tooth with your finger, you are never unsure which tooth it is. The pulp inside the tooth, the tissue that holds the nerve, has none of those fibres; when it becomes inflamed, the nerve only says 'pain' and gives no address. This is why a patient with deep decay cannot point to the tooth that hurts, and may even point to the lower jaw when the problem turns out to be in the upper jaw.

The map of referred pain is well established. The lower molars send their pain to the ear and the angle of the jaw; the lower front teeth send it to the tip of the chin. The upper molars and premolars refer pain to the temple, the cheek and under the eye. Referred pain does not cross the midline: a tooth on the right does not make your left ear hurt. That is why, in a patient whose ear hurts and whose ear examination is clear, the next place to look is the lower molars on the same side.

One of the most familiar causes of pain spreading to the ear is a partly erupted wisdom tooth. Food debris and bacteria get under the flap of gum left over the tooth, and the area becomes inflamed. The pain spreads from the back of the jaw to the ear, swallowing becomes difficult and the mouth does not open fully. If a high temperature, swelling in the face or neck, or difficulty swallowing has been added to this picture, do not wait for an appointment; go straight to A&E.

The jaw joint sits a centimetre in front of the ear canal. Pain from a joint this close feels like earache, and patients go to an ear, nose and throat (ENT) specialist first. This picture has its own signs: a tired jaw in the morning, a noise when you open your mouth, temples that tire when you chew, and pain that comes and goes during the day. Clenching your teeth at night is the most common factor feeding this picture; flattened chewing surfaces are the mark clenching leaves in the mouth.

The roots of the upper back teeth reach up to the floor of the sinus above the upper jaw (the maxillary sinus); in some patients the bone in between is as thin as paper. When the sinus becomes inflamed, pressure builds around these roots and the pain feels as if it is coming from the teeth. Telling them apart is not difficult: with sinus pain, several upper back teeth become tender at once, the pain gets worse when you lean forward, and there is a blocked nose as well. With pain from a tooth, a single tooth reacts sharply to cold.

Is the pain coming from a tooth, or from somewhere else?

These are the signs we look for at the examination. The signs in the first list show that the source is a tooth and that treating that tooth will end the pain. The signs in the second list tell you the source is outside the tooth; in that situation, having a tooth taken out does not stop the pain, it costs you a healthy tooth.

The tooth can be saved

If it reacts sharply to coldIf a sip of cold water sets off a knife-like pain that carries on after you put the glass down, the source is the nerve inside that tooth. If the pain continues for minutes, the inflammation has moved into the stage that cannot be reversed.
If the same pain comes back when you press on a single toothIf the pain is reproduced exactly when the dentist taps the tooth lightly or when you bite on something with that tooth, the address has been found. Referred pain has no trigger like this.
If the pain wakes you upThrobbing that gets worse when you lie down and peaks in the middle of the night is a sign of pressure inside the tooth. Jaw joint pain gets worse towards morning; pain from the nerve does not wait for any particular hour.
If there is swelling or discharge from the gumA small blister on the gum on the painful side, a bad taste in the mouth or discharge shows that the inflammation at the root tip has found a way out. The pain stops for a while here, but the infection stays where it is.

Saving it is unlikely to hold

If the pain changes when you open and close your mouthPain that gets worse when you yawn or bite into a large mouthful and goes away when you rest comes from the jaw joint and the chewing muscles. The pain coming back when you press with a finger on the point just in front of the ear is the clearest sign of this picture.
If it gets worse when you lean forward and several upper teeth are tender at onceUpper back teeth all becoming tender together, pain that gets worse when you bend your head forward and a blocked nose describe a picture caused by the sinuses. What needs treating here is not the tooth but the sinus.
If the pain strikes like lightning and is over in secondsShort, severe pain like an electric shock, triggered by touching your face, shaving or a cold wind, comes from the nerve itself. Dental treatment does not stop this pain; it needs to be assessed by a neurologist.
If there is discharge, fullness or hearing loss in the earIf the pain comes with discharge from the ear, a feeling of pressure or reduced hearing, the source is the ear itself. The first stop is an ENT specialist; the teeth come next once the ear has been found to be clear.

How we find the source

The aim of this sequence is not treatment but finding the address. With referred pain, treatment started on the wrong tooth neither stops the pain nor spares a healthy tooth; that is why we do not touch a tooth that has not been tested.

1
We take the history of the pain
When it started, what makes it worse (cold, sweet things, biting, opening your mouth, leaning forward), how long it lasts once the trigger is removed and whether it wakes you up all change the decision. The history on its own narrows down the possibilities considerably.
2
We test the teeth one by one
A cold test, light tapping on the tooth and a bite test try to reproduce the pain. We test not only the tooth you point to but also its neighbours and the teeth in the opposite jaw; with referred pain, the tooth you point to and the problem tooth are not necessarily the same.
3
X-rays and 3D imaging
A panoramic X-ray shows how close decay is to the nerve, inflammation at the root tip, the position of an impacted wisdom tooth and the condition of the sinus floor. Root cracks do not show up on a standard X-ray; if a crack is suspected, we take a CBCT scan.
4
We examine the jaw joint and the chewing muscles
We measure how wide your mouth opens, press with a finger over the joint and on the muscles of the temple and cheek, and look at which tooth touches first when you bite together. Flattened chewing surfaces give away clenching at night.
5
If needed, we do a numbing test
When the suspicion is split between two areas, one of them is numbed on its own. If the pain stops, the source is there; if it carries on, we look elsewhere. This test prevents root canal treatment, which cannot be reversed, from being carried out on the wrong tooth.
6
If the source is not a tooth, we refer you
When the picture turns out to come from the sinuses, the ear or a nerve, we tell you so and refer you to the right doctor. A dentist's job is not to prove that the pain is coming from a tooth, but to find where it is coming from.

What is done, depending on the source

There is no single treatment for this symptom; what is done depends on the source of the pain. The items below match each of the pictures on this page.

Inflammation of the nerve (pulpitis): root canal treatment

The inflamed tissue is removed from inside the root canal, the canal is cleaned and filled, and the source of the pain is gone. Throbbing that spreads to the ear eases noticeably within the first day of the procedure; tenderness when you bite may last a few more days. If the tooth is very badly broken down or its root has cracked along its length, extraction is discussed instead of root canal treatment.

Wisdom tooth: cleaning and extraction

In the acute phase, the area under the gum flap is cleaned and the inflammation is brought under control. If the pain keeps coming back, the tooth is taken out. A tooth with no room to come through will never leave you in peace; each flare-up means decay and bone loss on the back surface of the neighbouring molar.

Jaw joint and clenching: reducing the load

Treatment for this picture is not operating on the joint but reducing the load on it: a night guard, a soft diet for a while, jaw exercises and pain management. Permanently changing the bite by grinding down the teeth cannot be reversed, and there is not enough evidence that it works for jaw joint pain; that is why it is not part of the first step. The stress and sleep patterns that trigger clenching are also part of this.

Sinusitis: first the nose, then the teeth

With pain caused by the sinuses, the work is on the ENT side, and the pain stops when the sinus gets better. The reverse also happens: inflammation at the root tip of an upper back tooth breaks through the floor of the sinus and causes sinusitis. This is called sinusitis of dental origin, and unless the tooth is treated, the sinusitis comes back. A CBCT scan shows which one it is.

If the tooth cannot be saved: extraction and a replacement tooth

If the source is a tooth that cannot be saved, the question moves on from pain to what will happen to the gap. For a single missing tooth, the answer is a single-tooth implant. The protocol we use for patients who are losing one tooth after another is different: because the implants lock mechanically into the hard outer layer of the jaw, there is no wait for fusion, adding bone does not come into it, and you leave with your final fixed teeth at the end of three clinical days.

What happens if it is put off

We are not writing this to frighten you, but so that you can ask the right questions whichever dentist you see. If a dentist does not explain these things without being asked, ask.

Pain stopping does not mean healing

The most common reason toothache goes away on its own is not that the tooth has healed, but that its nerve has died. The pain ends, the infection moves down to the root tip and comes back weeks later with swelling. This silent period is when treatment is easiest; that is exactly when patients do not go to the dentist.

Painkillers and antibiotics do not remove the cause

Antibiotics are carried in the blood; because no blood reaches the dead tissue inside the root canal, they cannot get there. They bring the swelling down and calm the pain, but leave the source where it is. Once the medicine runs out, the picture comes back, and it goes a little further each time.

With referred pain, the wrong tooth gets treated

With referred pain, the tooth the patient points to and the problem tooth turn out to be different; a tooth that is opened up without testing has root canal treatment for nothing, and the pain stays. Root canal treatment cannot be undone. Ask for a second opinion if a dentist suggests opening your tooth without doing a cold test and taking an X-ray.

Infection spreads to the face and neck

When inflammation that starts in a tooth breaks through the bone into the soft tissue, swelling that rises to the eyelid or moves down to the neck, being unable to open the mouth, difficulty swallowing and a high temperature appear. Hours matter here, and the place to go is A&E. A single bad week is enough for a tooth that has been put up with for years to reach this point.

Untreated clenching costs you teeth

When you clench at night, your teeth carry, without you realising, a load they never meet in normal chewing, again and again throughout the night. The result is cracks in the enamel, broken fillings and crowns, and teeth that crack along their length. In teeth whose support has already been reduced, this load speeds up their loss.

When the pain goes away

How long it takes depends on the source. The timeline below is the realistic course of the pictures we see most often.

The first two days
Painkillers dampen the pain but do not stop the cause. For these two days, do not chew on that side, stay away from very cold and very hot drinks, and raise your head a little when you lie down. If toothache has lasted more than two days, it is not something to wait out at home.
After root canal treatment
Throbbing that spreads to the ear and jaw eases noticeably in the first 24 hours. Tenderness when you bite lasts a few days and goes down on its own.
If a wisdom tooth has been taken out
Swelling and limited mouth opening go down after the third day, and by the end of the first week the jaw feels comfortable. The pain spreading to the ear fades gradually over this period.
If the source is the jaw joint
The timeline for this picture is measured in weeks, not days. With a night guard and reducing the load, relief comes within a few weeks; a tired jaw in the morning is the last symptom to improve.
If the source is sinusitis
Most sinusitis clears up on its own within four weeks, and the tenderness in the teeth stops along with the sinus. If it has not improved after three weeks, go back to your GP. If pain in the same tooth continues after the sinus has cleared up, the source was the tooth all along; go back to your dentist.

Message us right away if

Swelling in your face or neck. If swelling rising to the eyelid or moving down under the jaw comes with difficulty swallowing or breathing, the place to go is A&E. Do not wait for an appointment in this situation.
A high temperature and a mouth you cannot open. Having a high temperature and being unable to open your mouth even a finger's width shows that the infection has spread to the chewing muscles. This does not wait for an appointment: go straight to A&E.
Pain for more than two days, or painkillers not working. Pain that does not go away despite painkillers and wakes you from sleep tells you the pressure inside the tooth is rising, and it does not ease with waiting.
Chest tightness or shortness of breath along with jaw pain. Jaw pain that comes with sweating, pressure in the chest or pain spreading to the arm is not coming from a tooth. In this situation, call 112 without losing any time.

What determines the cost

We do not give a single figure on this page, because until the source is found, the work to be done is not clear either: the same symptom ends with a single-session filling in one patient, root canal treatment in a second and a night guard in a third. Send us your X-ray and we will share what we see in writing. These are the items that determine the price:

The source of the pain: A filling, root canal treatment, wisdom tooth removal, a night guard and an implant are completely different procedures. A figure given before the source has been identified is bound to change at the clinic.
How much imaging is needed: In some cases a panoramic X-ray is enough. When a root crack, the position of an impacted tooth or a sinus problem is suspected, a cone beam CT (CBCT) scan is essential.
How many teeth are treated: A plan built around a single tooth and a plan covering several teeth are calculated separately. In patients who come with referred pain, the picture often goes beyond a single tooth.
What goes on top of the tooth: A back tooth that has had root canal treatment needs a crown; if an implant has been placed, the material of the fixed tooth that goes on it and the laboratory work affect the total. We tell you the brand of the material we use in writing from the start.

Frequently asked questions

My ear hurts, but the ENT doctor could not find anything. Could my tooth be the cause?

Yes, this is a very familiar story. With earache on one side where the ear examination is clear, the next place to look is the lower molars and the jaw joint on the same side. A dentist tells these two possibilities apart with a cold test, a bite test and an X-ray.

I cannot point to which tooth is hurting. Is that normal?

It is. The pulp tissue inside the tooth has no fibres that report position; the nerve signals the pain but not its address. That is why patients point to the right area but the wrong tooth. That is the dentist's job: finding not the tooth you point to, but the tooth that responds to testing.

Sinusitis or a tooth: how can I tell at home?

Look at three things. With sinusitis, several upper back teeth on the same side become tender at once; with pain from a tooth, a single tooth stands out. Sinusitis pain gets worse when you lean forward; toothache gets worse with cold and with biting. Sinusitis comes with a blocked nose. If all three point to the sinus, see an ENT specialist first.

My pain went away on its own. Should I still see a dentist?

Yes. The most common reason toothache goes away on its own is not that the tooth has healed, but that its nerve has died. The pain goes quiet, the infection grows silently at the root tip and comes back weeks later with swelling. This silent period is when treatment is easiest.

My jaw clicks and the pain spreads to my ear. Do I need to have a tooth taken out?

No. A noise when you open your mouth, a tired jaw in the morning and pain that goes away when you rest describe the jaw joint and the chewing muscles. Having a tooth taken out does not stop this pain; it costs you a healthy tooth. What needs doing is reducing the load on the joint: a night guard, a soft diet for a while and jaw exercises. Changing the bite by grinding down the teeth is a procedure that cannot be reversed, and it is not the first option for this picture.

I have an impacted wisdom tooth. Is that what is causing the pain in my ear?

This tooth is one of the most familiar causes of pain spreading to the ear and the back of the jaw. The signs that set it apart: difficulty swallowing, being unable to open your mouth fully, a bad taste in that area and swollen gum. An X-ray shows the position of the tooth. If the pain keeps coming back, extraction is discussed.

What happens if I lose my tooth at the end of all this?

When a single tooth is lost, it is replaced with a single-tooth implant; this is a standard procedure. The three-clinical-day protocol we use has a different field: the full mouth or many missing teeth. Because the implants lock mechanically into the hard outer layer of the jaw, there is no wait for fusion, and adding bone and months of waiting do not come into it; we also use it for patients with diabetes. You do not need this protocol for a single painful tooth.

Sources

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Next step

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Share your CBCT or panoramic X-ray. We will write back within 24 hours on which option is realistic for your tooth.

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