Sinus infection tooth pain is usually felt as a dull ache or pressure across several upper back teeth. This happens because the roots of the upper premolars and molars lie close to the maxillary sinuses. When the sinus lining becomes swollen, the brain may interpret the pressure as pain coming from the teeth.
Written and dentally reviewed by Dr. Manish Pandey, BDS, Dental Surgeon.
Quick answer: Sinus-related pain commonly affects multiple upper teeth and occurs with nasal congestion, facial pressure or a recent cold. Pain focused in one tooth—especially with biting sensitivity, swelling, a bad taste or a visible cavity—is more likely to need a dental examination.
What causes sinus infection tooth pain?
Yes. The maxillary sinuses are air-filled spaces behind the cheeks and above the upper back teeth. In some people, the tooth roots are separated from a sinus by only a thin layer of bone. Inflammation and pressure inside the sinus can stimulate nearby nerves and create referred pain in otherwise healthy teeth.
The American Association of Endodontists notes that sinus-related pressure may be felt in the face and teeth. MedlinePlus also lists toothache among possible sinusitis symptoms. However, sinus symptoms and dental disease can occur at the same time, so location alone cannot confirm the cause.
Which teeth can hurt with sinusitis?
Sinus toothache most often involves the upper premolars and molars. The discomfort may seem to move between teeth or affect several teeth on one or both sides. Lower-tooth pain is less typical of sinus pressure and deserves a dental assessment if it persists.
A painful upper tooth can also cause inflammation in the nearby sinus. This is called odontogenic or dental-origin sinusitis. Persistent one-sided nasal symptoms, a foul smell or taste, and a history of deep decay, root-canal problems or dental treatment may require coordinated evaluation by a dentist, endodontist or ENT clinician.
How do I know if tooth pain is from my sinus?
No single symptom is completely reliable, but the pattern provides useful clues.
- Several upper back teeth ache at the same time.
- The pain feels dull, heavy or pressure-like rather than sharply localized.
- You also have a blocked or runny nose, reduced smell, facial pressure or postnasal drip.
- Symptoms began during or soon after a cold.
- Cheek pressure may feel worse when bending forward.
- The teeth do not show an obvious cavity, fracture or gum swelling.
Clues that favor a dental toothache
- One tooth is clearly more painful than the others.
- Chewing or biting triggers sharp pain.
- Hot, cold or sweet foods cause lingering sensitivity.
- The gum is swollen, red or has a small pimple-like bump.
- There is a bad taste, pus, a broken filling or a visible cavity.
- Pain throbs, disturbs sleep or continues after nasal symptoms improve.
If biting is the main trigger, see our guide to tooth pain when biting. A gum bump or bad taste may point toward a gum boil or dental abscess.
Does sinus tooth pain get worse when bending over?
It can. Changing head position may increase the sensation of facial or sinus pressure, so discomfort sometimes feels stronger when bending forward. This is only a clue—not a diagnostic test. Migraine, jaw-muscle pain and dental disease can also change with posture or movement.
How long does sinus tooth pain last?
Sinus infection tooth pain should generally improve as the sinus inflammation settles. Acute sinusitis often follows a cold and commonly improves without antibiotics. NHS guidance says sinusitis usually clears on its own within about four weeks, although the course varies.
Arrange an assessment if tooth pain lasts more than one or two days, becomes severe, remains after the nasal symptoms improve, or repeatedly returns. A dentist may test the teeth, examine the gums and take dental radiographs when needed. If the teeth appear healthy but sinus symptoms persist, medical or ENT evaluation may be appropriate.
For mild symptoms associated with a cold, supportive measures may help:
- Rest and drink enough fluids.
- Use a saline nasal spray or rinse correctly; use sterile, distilled, or previously boiled and cooled water for nasal rinsing.
- Apply a warm compress over the cheek if it feels soothing.
- Consider an appropriate over-the-counter pain reliever only if it is safe for you, following the package directions or professional advice.
- Avoid smoking and other irritants.
Do not place aspirin, pain-relief gels or harsh substances directly on the tooth or gum. Do not start leftover antibiotics. Most acute sinus infections are viral, and antibiotics do not treat tooth decay or remove a dental abscess.
When should I see a dentist?
Book a dental examination if pain is focused in one tooth, lasts longer than a day or two, hurts on biting, causes persistent temperature sensitivity, or is accompanied by gum swelling, a bad taste, a broken tooth or a lost filling. A dental source needs dental treatment even when sinus pressure is also present.
What warning signs need urgent help?
Seek urgent dental or medical care for rapidly increasing facial swelling, fever with worsening tooth pain, swelling near the eye, difficulty opening the mouth, or feeling seriously unwell. Emergency care is needed if swelling affects breathing, swallowing or speaking, or if there are vision changes, confusion or severe headache.
Frequently asked questions
Can sinus pressure make healthy teeth sensitive?
Yes. Referred pressure can make several healthy upper teeth feel tender or heavy. Persistent sensitivity still needs a dental check because decay, cracks and gum recession can produce similar symptoms.
Can a dentist tell whether the pain is from a sinus?
A dentist can examine individual teeth, perform sensitivity and biting tests, check the gums and use radiographs when indicated. If dental causes are not found and the symptom pattern suggests sinus disease, the dentist may recommend medical or ENT assessment.
Will antibiotics stop sinus tooth pain?
Not automatically. Many acute sinus infections are viral, while a dental infection requires treatment of the affected tooth. Antibiotics should be used only when a qualified clinician finds a specific indication.
Can a bad tooth cause a sinus infection?
Yes. Infection around the root of an upper back tooth can sometimes involve the adjacent maxillary sinus. Dental-origin sinusitis may not resolve until the tooth source is diagnosed and treated.
References
- American Association of Endodontists: Tooth Pain
- MedlinePlus Medical Encyclopedia: Sinusitis
- MedlinePlus Medical Encyclopedia: Toothaches
- NHS: Sinusitis
Dental disclaimer: This article is for general education and does not diagnose the cause of tooth or facial pain. Treatment depends on an in-person assessment. Seek care promptly for severe pain, swelling, fever, breathing or swallowing difficulty, or other urgent symptoms.