A toothache doesn’t always start in a tooth. Sometimes the real problem sits higher up, in the sinuses, and the pain simply travels down to the teeth. Yes, a sinus infection can cause pain in the upper teeth. This happens because the maxillary sinuses sit just above the upper jaw, close to the roots and nerves of the upper back teeth. When the sinus lining becomes inflamed and pressure builds in this area, the discomfort can be felt as pain in nearby teeth.
This mix-up is common, and it makes sense. The sinuses and the teeth sit close together and share some of the same nerve pathways, so pain from one area can feel like it is coming from the other. Southern California Sinus Institute helps patients in West Hills and the greater Los Angeles area determine whether tooth pain is coming from the sinuses, the teeth, or both. Once you understand the anatomy behind this link, the rest of the picture becomes much easier to follow.
Why Can a Sinus Infection Make Your Teeth Hurt?
The maxillary sinuses are two air pockets built into your cheekbones. They sit just above the roots of your upper back teeth. In many people, only a thin wall of bone separates the bottom of each sinus from the tips of those tooth roots, sometimes so thin that the roots almost touch the sinus floor.
The close spacing explains why you can feel a sinus infection in the mouth. The nerves that carry sensation to the upper teeth run close to the walls of the sinuses. When the maxillary sinus becomes inflamed, pressure and irritation in this closely connected area can be perceived as pain in the upper teeth. Sinus-related tooth pain often feels more diffuse and may affect several upper back teeth rather than one clearly identifiable tooth.
Also Read: 6 Common Signs of Sinus Infection and When to See a Doctor
Sinus Infection vs. Tooth Infection: How Can You Tell?
Figuring out whether it’s a sinus infection or a tooth infection starts with looking at the whole pattern of symptoms, not just where it hurts. A sinus cause tends to spread wide, while a dental one may stay narrow and sharp.
Clues that point toward the sinuses include:
- Aching in several upper teeth at once
- A stuffy nose or thick drainage
- Pressure across the cheeks or forehead
- A weaker sense of smell
- Pain that gets worse when you lean forward
Clues that point toward a single tooth include:
- Pain focused on one spot
- Sharp pain from hot or cold foods and drinks
- Swelling or soreness in the gum next to one tooth
- A visible chip, crack, or dark spot on the tooth
- Steady pain with no stuffy nose or facial pressure at all
These lists are a starting point for describing what you feel. The two conditions can overlap, and a tooth infection can sometimes spread upward and irritate the sinus lining as well. When you are not sure which one you are dealing with, a professional exam is the safest way to find out.
When Tooth Pain May Point to Ongoing or Recurrent Sinus Problems
Many cases of acute sinusitis improve with time and supportive care. But if congestion, sinus pressure, drainage, or upper tooth pain lasts longer than expected, repeatedly returns, or never fully resolves, it is worth looking more closely at the cause. Persistent symptoms may be related to chronic sinus inflammation, recurrent infections, allergies, structural blockage, or another underlying problem.
An ENT visit for recurring symptoms usually starts with questions about your medical history, followed by an examination of the nose. Depending on your symptoms, the evaluation may include nasal endoscopy, which uses a thin scope to examine the nasal and sinus drainage areas. A CT scan may also be recommended when imaging is needed to better understand persistent or recurrent symptoms.
Also Read: Can Sinus Infections Cause Tooth Pain? Here’s the Connection
How Is Sinus-Related Tooth Pain Treated?
Once the source of the pain is clearer, treatment can focus on the underlying problem. If the teeth are healthy and the symptoms are sinus-related, treatment focuses on the sinus condition. If a dental infection is contributing to inflammation in the maxillary sinus, both the dental source and the sinus disease may need to be addressed.
Treatment may include saline rinses to help flush the sinuses, medication to reduce inflammation, or treatment of an allergy that keeps triggering symptoms. If these steps don’t improve chronic sinusitis or repeat infections, further testing may be required. Some patients may then be candidates for balloon sinuplasty, which gently opens a blocked sinus passageway, or endoscopic sinus surgery in more complicated cases. These options are the result of a full evaluation and are not the first step considered by your specialist. Also, for clarity, treatment for a sinus infection may not cure a tooth that has become infected or damaged. That kind of pain needs dental attention, as the two issues require different treatment even if the symptoms are similar.
When Should You See an ENT or Dentist?
Start with a dentist if the pain is clearly localized to one tooth, occurs when you bite or chew, is triggered by hot or cold foods, or comes with swelling or visible damage around a specific tooth.
If you’re dealing with tooth pain and constant congestion, frequent sinus infections, facial pressure, or drainage that won’t go away, an ENT evaluation may be appropriate. Sometimes you need a dentist and an ENT to work together, especially when the symptoms are not clearly pointing in one direction. Whatever you think is causing the problem, seek immediate care if you have any of the following warning signs: major facial swelling, severe or rapidly worsening pain, high fever, eye swelling or sudden changes in vision, or difficulty breathing or swallowing. These symptoms warrant prompt medical evaluation.
Also Read: Persistent Sinus Pain: Identifying When It’s Time for Professional Care
Conclusion
The maxillary sinuses lie very close to the roots of the upper back teeth, which is why sinus inflammation can sometimes feel remarkably similar to a toothache. The real trick is determining whether the pain is from the sinuses, the teeth, or sometimes a bit of both. Nasal congestion and facial pressure can point to sinuses, but pain that seems focused on one tooth could be a dental problem. An exam is the best way to be sure.
If you keep dealing with sinus pressure, stuffiness, or tooth pain that persists, it may be time to find out what is really behind it. Please contact Dr. Alen Cohen at Southern California Sinus Institute, a renowned ENT and Nose and Sinus Specialist, in West Hills and Los Angeles, for a consultation.
Frequently Asked Questions
1. Can sinus pressure make your teeth hurt?
Yes. Pressure and swelling in the maxillary sinuses can cause pain felt in the upper teeth, even when the teeth themselves are healthy.
2. How can I tell sinus tooth pain from a tooth infection?
Sinus pain may affect several upper teeth and is accompanied by nasal or facial symptoms. A dental problem typically affects a single tooth and may cause chewing pain, temperature sensitivity, or gum swelling. When it is not clear, get it checked.
3. How long does sinus-related tooth pain last?
It depends on the underlying sinus problem. The pain should ease as the sinus issue clears up, so pain that lingers or keeps coming back needs a closer look.
4. Can a tooth infection cause sinus problems?
Yes. Since some upper tooth roots sit close to the maxillary sinus, an infected tooth can sometimes spread into the sinus and irritate it.
5. When should I see an ENT for sinus-related tooth pain?
Consider an ENT evaluation when tooth pain comes with ongoing or recurrent congestion, facial pressure, drainage, or a diminished sense of smell, particularly when a dental evaluation has not identified a tooth-related cause.