Sinus infections, or sinusitis, impact nearly 29 million Americans annually. Inflammation in the sinus cavities can cause pressure, headaches, nasal drainage and general discomfort. These symptoms are frequently caused by viruses, but bacterial or even fungal infections may be to blame in some cases.
What’s less commonly known is how your upper teeth, especially those in the back, may impact your sinuses. The upper teeth sit close to your largest sinus cavities, meaning problems in your mouth can quickly escalate into sinus troubles. This connection is especially important to understand in places where seasonal allergies are already common.
How Dental Problems Lead to Sinus Infections

The roots of your upper molars and largest sinus cavities are in proximity. This means that a dental infection, such as one caused by deep tooth decay or a failed root canal, can spread directly into the sinus cavity.
Here are a few symptoms that might point to a sinus infection rooted in a dental issue:
- Facial pressure or sinus congestion that doesn’t clear up
- Pain in your upper jaw or teeth
- A runny nose or postnasal drip
- Headaches or swelling around the cheeks
- Bad breath or a lingering bad taste in your mouth
When It’s Time to Get Checked Out
If you’re experiencing sinus symptoms alongside tooth discomfort or have a history of recent dental work, it’s wise to consult an ENT. Early intervention can prevent complications and lead to faster relief.
If you’re in or near Palmetto and are struggling with recurring sinus issues or facial pain, don’t hesitate to reach out to Palmetto ENT & Allergy to schedule a consultation today.