Tooth Pain: When Sinus Issues Overlap with Dental Health - Dentistry

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Molar toothache


Hello, doctor...
I have been experiencing symptoms of sinusitis for six months, and this week I had a CT scan of my ears and nose.
The doctor at Linkou Chang Gung Memorial Hospital said there is inflammation at the junction above the first and second molars and the maxillary sinus, and advised me to see a dentist.
I went to a dental clinic for a scan, and it confirmed inflammation in that area, but the dentist examined my teeth and said there were no issues.
Later, he mentioned that just because the scan showed no problems doesn't mean the teeth are fine, but he also didn't know how to proceed.
Currently, my gums above the molars are swollen and painful.
Can you tell me, doctor, if a CT scan showing no issues with the teeth can confirm that the teeth are not the problem? Generally, if there is a suspicion of dental issues but imaging shows no problems, what are the usual steps taken? Should I go to a dental department at a medical center for another examination? Thank you for your help.

Niming, 40~49 year old female. Ask Date: 2021/09/04

Dr. Lin Jiayong reply Dentistry


Hello: Based on your condition, it is usually recommended to observe.
If the source of the inflammation or infection is from a tooth, it will definitely be visible on imaging after some time.
If it is not from a tooth, further confirmation is needed to check for other sources of infection.
Linkou Chang Gung Memorial Hospital is already a medical center.
Your issue ultimately stems from sinusitis, so it is advisable to continue monitoring and discussing with an otolaryngologist.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/09/04

More Info


Tooth pain can often be a complex issue, especially when it overlaps with sinus problems. In your case, it seems that the inflammation in your maxillary sinus, which is located above your upper molars, may be contributing to the discomfort you are experiencing in your teeth. This is a common scenario where sinusitis can mimic dental pain, leading to confusion in diagnosis.

When you have sinusitis, the inflammation can cause pressure and pain in the areas surrounding the sinuses, including the upper teeth. The roots of the upper molars are often very close to the maxillary sinus, and any inflammation or infection in the sinus can lead to referred pain in the teeth. This is why your dentist may have found no issues with your teeth upon examination, yet you still feel pain and swelling in the gums around those teeth.

In cases where imaging, such as a CT scan, shows sinus involvement but no clear dental issues, it is essential to consider a few factors:
1. Re-evaluation of Symptoms: If your symptoms persist, it may be necessary to revisit both your dentist and an ENT specialist. The dentist can look for subtle signs of dental issues that might not be visible on standard imaging, such as cracks or microfractures in the teeth that could be causing pain.

2. Further Imaging: Sometimes, a different type of imaging, such as a cone beam CT scan, may provide more detailed information about the dental structures and their relationship with the sinuses. This can help in identifying any hidden issues.

3. Observation and Management: If the dental examination continues to show no issues, and the pain is suspected to be related to sinus problems, managing the sinusitis may alleviate the tooth pain. This can include medications such as decongestants, nasal corticosteroids, or even antibiotics if a bacterial infection is suspected.

4. Dental Treatment: If the pain persists despite treating the sinusitis, further dental interventions may be necessary. This could include treatments for conditions like bruxism (teeth grinding), which can cause tooth pain and discomfort in the absence of visible dental issues.

5. Referral to Specialists: If the situation remains unclear, seeking a second opinion from a dental specialist, such as an oral surgeon or an endodontist, may be beneficial. They can provide a more in-depth evaluation of the dental structures and any potential underlying issues.

In summary, while imaging can provide valuable insights, it does not always capture every dental issue. Persistent pain, especially when accompanied by sinus symptoms, warrants a thorough investigation from both dental and medical perspectives. If your symptoms continue, I recommend following up with both your dentist and an ENT specialist to ensure a comprehensive approach to your treatment.

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