Tooth pain rarely stays in one place. People often describe an ache behind one eye, pressure across a cheekbone or a dull throb in the temple, and only later work out that a tooth is involved. Knowing why this happens can help you describe your symptoms accurately and reach the right assessment sooner.
At Boutique Dental Care, we assess tooth pain and associated headaches by looking at the teeth, gums, bite and jaw muscles together, rather than treating the painful spot in isolation.
Quick Overview
- Toothache causing headache and eye pain is usually a form of referred pain, where discomfort is felt in a different area from where it begins.
- It may apply to people with untreated cavities, a tooth infection, gum disease, teeth grinding or strain in the jaw joint, though the pattern differs from person to person.
- Identifying a dental cause may help explain head pain that has not settled with usual pain relievers, though it does not rule out other causes.
- Which tooth is involved, how long the pain has lasted, whether the jaw muscles are affected and your general health all influence what happens next.
- Where the pain sits, what sets it off and how it behaves across the day usually guide the assessment.
Below, we explain how shared nerve pathways carry pain signals between your teeth, jaw and head, which dental problems are most often involved, and when a dental assessment may be worth arranging.
Can a Toothache Cause a Headache and Eye Pain?
Tooth pain can be felt as head pain or pain around the eye. A toothache can also feel like head, ear, and jaw pain, and a sinus infection or jaw problem can make your teeth hurt in turn.
The explanation lies in the anatomy. Sensation from your face, teeth and jaw travels along the trigeminal nerve, which has three branches: the ophthalmic branch serving the forehead and the area around the eye, the maxillary branch serving the upper teeth, cheek and the region beneath the eye, and the mandibular branch serving the lower teeth, jaw joint and part of the side of the head. Fibres from all three converge on overlapping groups of nerve cells in the brainstem. Because signals from teeth, jaw muscles, sinuses and facial skin arrive at the same relay point, the brain cannot always pinpoint where a pain signal started. The result is referred pain.
In practice, this produces patterns dentists see regularly. An inflamed or infected upper molar often refers pain upward into the cheek, temple and the area under the eye, which can read as sinus pressure. A lower molar more often refers pain towards the ear, the angle of the jaw and the side of the head. Pain can also spread to neighbouring teeth or across to the opposite arch, which is one reason people frequently point to the wrong tooth.
The reverse also happens: tense jaw muscles or a strained jaw joint can make healthy teeth ache. A careful history matters more than any single symptom.
What Does the Research Say About Dental Pain and Headaches?
Tooth pain spreading into the head is common. A few studies give a sense of how common.
One study looked at 100 people with pain coming from the nerve inside a tooth. Around 65% felt the pain somewhere other than the tooth itself, including the head, face and neck.
Jaw joint problems and headaches often turn up together. A 2022 review of 31 studies found that roughly 6 in 10 people with a jaw joint disorder also get headaches. Where the jaw joint problem is painful, it was closer to 8 in 10.
Clenching during the day is linked to tension headaches. A 2021 review found people who clench while awake were several times more likely to report tension headaches than people who do not. The link with night-time grinding was less clear.
Your upper back teeth sit right against the sinuses. A 2023 review of CT scans estimated that about half of sinus infections behind the cheekbones may start with a dental problem.
These numbers describe groups of people, not individuals. They point to a pattern, not a diagnosis, and your own situation may be different.
Which Dental Problems Are Most Often Involved?
Several dental conditions can produce head pain, facial pain or pain around the eye. Which one applies to you depends on examination and imaging, not symptoms alone.
- Untreated tooth decay. When decay reaches the inner pulp, inflammation raises pressure inside a rigid tooth, and the pain often radiates. Early decay may be managed with tooth-coloured fillings, while deeper involvement may call for root canal therapy.
- Dental abscess or tooth infection. An abscess can produce severe, throbbing pain along with facial swelling, fever and swollen lymph nodes. Healthdirect advises that a tooth abscess will not resolve on its own and needs prompt attention.
- Gum disease. Advanced gum disease causes inflammation around the tooth root, which can register as a dull, poorly localised ache rather than sharp tooth pain.
- Teeth grinding and jaw clenching. Sustained muscle activity in the masseter and temporalis muscles can create temple and forehead pain that resembles a tension headache. A custom night guard may help reduce load on the teeth and jaw muscles for some people.
- Temporomandibular joint disorders. Clicking, restricted opening, jaw tension, and earache alongside headaches may point towards the jaw joint. TMJ therapy aims to address the contributing factors rather than the pain alone.
- Wisdom teeth. Partly erupted or impacted wisdom teeth can cause pressure, gum swelling and radiating pain through the back of the jaw and into the head.
- Cracked teeth and tooth sensitivity. A crack can produce brief, sharp pain on biting that is difficult to localise, sometimes with lingering discomfort afterwards.
What Affects Whether Tooth Pain Spreads to Your Head?
Not everyone with a dental problem develops a dental headache. Several factors appear to influence it:
- The tooth involved. Upper molars and premolars sit close to the maxillary sinus and refer pain differently from lower teeth.
- How long the pain has lasted. Longer-standing pain is more likely to involve sensitised nerve pathways.
- Pain intensity. More intense pain tends to be reported as spreading further.
- Muscle tension. Clenching in response to pain can add a muscular headache on top of the dental one.
- Existing headache conditions. Migraine or tension headaches may interact with dental pain.
- General health and stress. Sleep, stress and other health conditions affect how pain is perceived.
How to Care for Tooth Pain and Related Headaches
Pain relievers may offer temporary relief, though they do not address the underlying dental problem. Lasting relief usually depends on identifying and treating the root cause.
Seeing a dentist as soon as possible is recommended if a toothache lasts more than two days or does not improve with pain-relief medicines, and it is advised to see a dentist if a toothache occurs with fever above 38°C, trouble swallowing, pain on biting, a bad taste or swelling in the cheek or jaw. It is also advised to go straight to a hospital emergency department if you have severe pain, swelling, bleeding that will not stop, or signs of infection such as fever or spreading swelling.
For routine care, see a dental practitioner every 6 to 12 months, or as often as your practitioner recommends, since regular check-ups support early detection of decay and other problems. This matters because dental problems are often silent until they are advanced. According to the Australian Institute of Health and Welfare, around 32% of Australian adults aged 15 and over have at least one tooth with untreated decay, and adults who usually visit the dentist only when they have a problem were nearly twice as likely to have untreated decay as those attending for check-ups (44% compared with 24%).
If your head pain has no dental explanation after examination, your dentist can help you work out who to see next. Persistent headaches, facial pain or pain around the eye without a clear dental cause warrant medical advice.
A Considered Approach to Toothache, Headache and Eye Pain
Head pain that travels with tooth pain is worth assessing properly, because the site of the pain and its source are not always the same. An examination that considers your teeth, gums, bite and jaw muscles together gives a clearer picture than treating the sorest spot. Individual outcomes vary, and what is appropriate depends on your individual situation.
If you would like to explore whether your headache, jaw pain or eye pain may have a dental cause, we welcome you to arrange an oral health examination at Boutique Dental Care. If your pain is severe or accompanied by swelling, our emergency dentist services in Chatswood may be more appropriate.
Call Boutique Dental Care: (02) 9054 5281 or get in touch through our contact page.
Frequently Asked Questions
Can a toothache cause a headache?
Tooth pain can be felt as head pain because the teeth, jaw and head share sensory pathways through the trigeminal nerve. Toothache pain can also be felt in the head, ear and jaw. Whether this happens, and how strongly, differs between individuals.
Can a tooth infection cause pain behind the eye?
An infection in an upper tooth can refer pain into the cheek, temple and the area under or behind the eye, partly because the upper back teeth sit close to the maxillary sinus. Pain behind the eye has many possible causes, so it should be assessed rather than assumed to be dental. See a dentist promptly if pain behind the eye occurs with facial swelling, fever or vision changes.
How do I know if my headache is from my teeth or my sinuses?
The two can be difficult to separate, and they sometimes overlap. Dental pain more often worsens with biting, temperature or pressure on a specific tooth, while sinus pain tends to change with head position and occur alongside nasal congestion. Research suggests a proportion of maxillary sinusitis cases have a dental origin, so an examination and imaging are usually needed to tell them apart.
Can teeth grinding cause headaches?
Grinding and clenching place sustained load on the jaw muscles, which can produce temple and forehead pain. Research has associated awake clenching with tension-type headache, though the evidence for sleep grinding is less clear. A custom night guard may help some people reduce that load, and results vary.
How long should I wait before seeing a dentist for tooth pain and headaches?
See a dentist as soon as possible if toothache lasts more than two days or does not improve with pain-relief medicines. Seek care sooner if you have facial swelling, fever, trouble swallowing or a bad taste in your mouth, as these may indicate infection.
Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.
References
- Healthdirect Australia. Toothache and gum swelling. https://www.healthdirect.gov.au/toothache-and-gum-swelling
- Australian Dental Association. FAQs, urgent dental pain guidance. https://ada.org.au/faqs-page
- Australian Institute of Health and Welfare. Oral health and dental care in Australia: Healthy teeth. https://www.aihw.gov.au/reports/dental-oral-health/oral-health-and-dental-care-in-australia/contents/healthy-teeth
- Yakkaphan P, Smith JG, Chana P, Renton T, Lambru G. Temporomandibular disorder and headache prevalence: A systematic review and meta-analysis. Cephalalgia Reports, 2022. https://journals.sagepub.com/doi/10.1177/25158163221097352
- Association Between Primary Headache and Bruxism: An Updated Systematic Review. Journal of Oral & Facial Pain and Headache, 2021. https://pubmed.ncbi.nlm.nih.gov/34129658/
- Global Prevalence of Maxillary Sinusitis of Odontogenic Origin and Associated Factors: A Systematic Review and Meta-Analysis. Journal of Endodontics, 2023. https://pubmed.ncbi.nlm.nih.gov/36754253/
- Prevalence of Referred Pain with Pulpal Origin in the Head, Face and Neck Region. Iranian Endodontic Journal. https://pmc.ncbi.nlm.nih.gov/articles/PMC3808560/