A toothache does not always start in the tooth.
When the sinuses become inflamed, pressure and inflammation can sometimes create pain that is felt in nearby teeth – particularly the upper back teeth, whose roots sit close to the maxillary sinuses. Mayo Clinic notes that sinusitis can cause aching in the teeth and that upper rear teeth are particularly likely to be affected.
That overlap can be confusing. A person may feel a very real toothache without having a cavity or dental infection. If you’re unsure whether your symptoms are dental or sinus-related, a dentist in Red Deer can help determine the likely source of the pain and recommend the appropriate next steps.
So how can you tell whether the pain is more likely to be related to your sinuses or your teeth?
Why sinus problems can feel like a toothache
The maxillary sinuses are air-filled spaces located behind the cheekbones. Their close relationship with the roots of the upper back teeth helps explain why inflammation in the sinus area can be perceived as dental pain.
Sinus-related discomfort may feel like:
- A dull ache across several upper teeth
- Pressure rather than a sharp, isolated pain
- Pain that becomes more noticeable when bending forward
- Discomfort occurring alongside nasal congestion or facial pressure
- Aching that seems to affect more than one tooth
By contrast, pain from a particular tooth is more likely to be concentrated around that tooth, although symptoms can overlap.
A simple way to compare the patterns
| Pattern | May suggest sinus involvement | May suggest a dental problem |
| Several upper back teeth hurt together | Common clue | Less typical |
| Nasal congestion | Supports sinus involvement | Not usually caused by a tooth |
| Facial pressure | Supports sinus involvement | Not a typical isolated dental symptom |
| Pain from one specific tooth | Less typical | More suggestive |
| Pain when biting | Can occur, but not specific | Can be important |
| Swollen gum around one tooth | Less typical | More suggestive |
| Persistent sensitivity to hot or cold | Less typical | Can point toward a dental cause |
| Symptoms after a dental injury | Unlikely | More suggestive |
This is a guide, not a diagnostic test. A dental infection and sinus inflammation can also occur at the same time.
Why the location of the pain matters
Sinus-related tooth pain is most commonly associated with the upper back teeth because of their anatomical relationship with the maxillary sinuses. Mayo Clinic specifically identifies the upper rear teeth as a common location for sinus-related toothache.
Lower teeth are less straightforward. If someone has significant lower-jaw tooth pain and also happens to have sinus symptoms, it is worth considering dental and other causes rather than automatically assuming the sinuses are responsible.
What if the pain is severe?
Severe pain deserves attention regardless of its suspected cause.
A sinus infection can cause substantial facial pressure and aching, but a dental abscess, cracked tooth, inflamed pulp or other dental problem can also produce intense pain.
A dental assessment is particularly sensible when:
- One tooth is clearly responsible for the pain.
- The tooth hurts when biting or chewing.
- There is swelling around the tooth or gum.
- You have a bad taste or drainage in the mouth.
- Pain continues after the sinus symptoms improve.
- The pain keeps returning in the same tooth.
- You have recently had dental treatment or trauma.
A dental examination can help determine whether there is an obvious dental source. Mayo Clinic similarly recommends dental assessment for toothache before assuming that sinus disease is responsible.
For a more detailed explanation of the overlapping symptoms, see this guide on how totell the difference between tooth pain and sinus pain.
What can you do while you figure out the cause?
If you have mild tooth discomfort during a respiratory illness, practical measures may include staying hydrated, following appropriate self-care for the underlying illness, and using over-the-counter pain relief when it is safe for you.
Do not place aspirin or another painkiller directly against the gums. Mayo Clinic notes that doing so can damage gum tissue.
If sinus symptoms are persistent, worsening, or accompanied by concerning symptoms, medical assessment may be appropriate. Mayo Clinic advises contacting a healthcare professional when sinus symptoms last more than a week, worsen after initially improving, or are associated with persistent fever.
Can a sinus infection and tooth infection happen together?
Yes. The two problems are not mutually exclusive.
A dental infection involving an upper tooth can affect nearby sinus structures, while sinus inflammation can produce pain that feels like it comes from an upper tooth. That is one reason self-diagnosis based only on pain location can be unreliable.
When should tooth pain be treated as urgent?
Seek prompt dental or medical assessment for significant swelling, severe or rapidly worsening pain, fever associated with dental symptoms, or difficulty opening the mouth.
Emergency medical care is warranted if swelling around the mouth, throat or neck interferes with breathing or swallowing. The NHS identifies these symptoms as potentially serious.
The bottom line
Sinus pressure can genuinely feel like a toothache, particularly in the upper back teeth. Congestion, facial pressure and several aching upper teeth may point toward sinus involvement, while a single persistently painful tooth, gum swelling or pain with biting may warrant closer dental investigation.
The important point is not to assume that every toothache is a cavity – or that every toothache occurring during a cold is caused by the sinuses. When the pattern is unclear, or the pain persists, an appropriate dental or medical assessment can help identify the source. If you’re experiencing ongoing or unexplained tooth pain, book an appointment with your dentist for a proper evaluation.
FAQs
Can a sinus infection make your teeth hurt?
Yes. Inflammation around the maxillary sinuses can cause pain that is felt in nearby upper teeth.
Which teeth are most affected by sinus pressure?
The upper back teeth are particularly likely to be affected because their roots are close to the maxillary sinuses.
Can sinus pressure cause lower tooth pain?
It is less typical. Lower-jaw pain should not automatically be attributed to sinus disease and may require assessment for a dental or other cause.
How do I know if it is a tooth infection or sinus infection?
There is no reliable home test. The location, pattern, and accompanying symptoms provide clues, but persistent or severe pain may require a dental or medical examination.
Does sinus tooth pain go away when the sinus problem improves?
It can, if sinus inflammation was the source of the pain. Persistent pain after respiratory symptoms resolve deserves further evaluation.
Can a tooth infection cause sinus problems?
Yes. Infection involving an upper tooth can sometimes affect the nearby maxillary sinus.
When should tooth pain be considered an emergency?
Severe swelling, difficulty breathing or swallowing, significant facial swelling, or rapidly worsening symptoms require urgent assessment.