Why Do My Teeth Feel Sore After a Cold?

If you’ve recently recovered from a nasty cold or sinus infection, you might notice a dull, throbbing ache in your upper back teeth. It can feel exactly like a cavity, but the true culprit is often sitting just above your jaw. Your upper molars have roots that sit incredibly close to—and sometimes even extend into—your sinus cavities.

When you have a cold, allergies, or a sinus infection, these cavities become inflamed and fill with fluid. This buildup creates pressure that pushes directly down onto the nerves of your upper teeth. The result is a continuous ache that often feels worse when you walk, jump, or tilt your head forward.

To tell the difference between a sinus toothache and a dental issue, notice which teeth hurt. Sinus pressure usually causes a general ache across several upper teeth at once, rather than focusing on a single spot. It’s also frequently accompanied by nasal congestion, a headache, or pressure around your eyes and cheeks.

While treating your sinus symptoms with steam or decongestants will usually ease the pressure and the toothache, you shouldn't ignore persistent pain. If the ache stays around long after your cold clears up, or if it shifts to a lower tooth, it’s time to get it checked out.

At Petras Family Dental in Amherstburg, we can use quick, comfortable imaging to see exactly what’s causing your discomfort and ensure your teeth are completely healthy. We’re here to help you find relief. Contact us at 519-713-8985 or visit petrasfamilydental.com to book your appointment