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Seasonal allergies bring runny noses, itchy eyes, and sneezing fits—but your mouth may also suffer more than you realize. If you’re prone to spring or fall allergies, it's important to know how they can impact your oral health—and what you can do to minimize the effects.

Dry Mouth: The Hidden Allergy Symptom

Many people breathe through their mouth when nasal congestion blocks airflow. This mouth breathing, especially during sleep, reduces saliva flow and causes dry mouth. And saliva is your first defense against cavities—it helps rinse away food and neutralize acids.

Less saliva means:

  • More plaque buildup
  • Increased risk of tooth decay
  • Higher chances of bad breath
  • A sore or scratchy throat

Antihistamines Can Also Dry Your Mouth

While allergy medications help reduce your symptoms, they often come with the side effect of dry mouth as well. Over time, this can make your teeth more susceptible to decay and your gums more prone to irritation.

Sinus Pressure and Tooth Pain

The maxillary sinuses sit just above your upper molars. When these sinuses become inflamed during allergy season, they can press down on the roots of your teeth, leading to dull, throbbing pain. This sinus-related toothache is easy to confuse with a dental issue.

How to Keep Your Mouth Healthy During Allergy Season

  • Stay hydrated to combat dry mouth.
  • Chew sugar-free gum to stimulate saliva.
  • Use a humidifier at night to keep nasal passages moist.
  • Rinse with water after taking allergy meds.
  • Brush and floss regularly to stay ahead of plaque buildup.
  • See your dentist if you’re experiencing unexplained tooth pain or persistent dry mouth.

Breathe Easy—And Keep Smiling

If allergies are taking a toll on your mouth, a little extra care can make a big difference.

Schedule your checkup with Dr. Michael Fernandez today to keep your smile healthy year-round