If you’ve recently had a cold or the flu and noticed your teeth suddenly feel more sensitive, you’re not imagining things. Tooth sensitivity after an illness is surprisingly common and often temporary—but in some cases, it may signal a dental issue that needs attention.
Why illness can cause tooth sensitivity
One of the most common reasons for post-illness tooth sensitivity is sinus pressure. Your sinuses sit just above your upper teeth, and when they become inflamed or congested during a cold or flu, the pressure can irritate nearby tooth nerves. This can create a dull ache or sharp sensitivity, especially in the upper back teeth.
Another factor is dry mouth. When you’re sick, you may breathe through your mouth more, take medications that reduce saliva, or become dehydrated. Saliva plays a critical role in protecting tooth enamel, and reduced saliva can leave teeth more vulnerable to sensitivity.
Changes in habits during illness can also play a role. Acidic cough drops, sports drinks, or citrus juices can weaken enamel, while brushing too aggressively when you don’t feel well may irritate exposed areas of the teeth or gums.
When sensitivity may be a dental issue
Sensitivity related to a cold or flu typically improves within a week or two after you start feeling better. If your tooth sensitivity lingers, worsens, or is isolated to one specific tooth, it may be a sign of an underlying dental concern.
Dental issues that can cause ongoing sensitivity include tooth decay, cracked teeth, gum recession, worn enamel, or an old filling that needs to be replaced. Sensitivity that occurs with chewing, pressure, or spontaneous pain—especially without sinus symptoms—should be evaluated by a dentist.
What you can do
If you’re recovering from an illness, stay well-hydrated, use a soft-bristled toothbrush, and consider a toothpaste designed for sensitive teeth. Avoid acidic foods and drinks while your mouth recovers.
If sensitivity doesn’t resolve or you’re unsure of the cause, the team at Holman Family Dentistry is here to help. A quick exam can determine whether your discomfort is temporary or something that needs treatment—so you can get back to feeling comfortable and confident in your smile. Schedule an appointment with us!
Site created by AR Marketing & Design Agency
