5 Common Canker Sore Triggers


Canker sores are small, shallow ulcers that pop up in our mouths and on the inside of our lips unexpectedly, and can take days to heal. The good news is that they’re fairly easy to prevent, once you understand their triggers.

5 Common Triggers For Canker Sores

  1. Stress – Stress can weaken your immune system, making it easy for canker sores to form and irritate your mouth.
  2. Tissue Injury – If you already have cuts or scrapes inside of your mouth (from biting your cheek, for example), you’re more vulnerable to canker sores.
  3. Foods – Foods that are high in acidity like strawberries, tomatoes, pineapples and lemons can trigger canker sores. Sour candies are also a common culprit.
  4. Dental Appliances – Having braces or ill-fitting dentures could also cause canker sores, since it increases opportunities for irritation in your mouth.
  5. Sickness – If you already have an infection in your body, the chances are higher for canker sores.

Some Simple Canker Sore Remedies

Once you learn your triggers, canker sores become much easier to avoid. Limit problematic foods. If braces are irritating your mouth, ask for more dental wax, or have the trouble-spots checked. If stress is contributing to canker sores, try stress-reduction techniques.

After checking your triggers, if you find that you’re still getting frequent canker sores, check your oral care routine.

Some preventive oral care solutions include:

  • Using a soft-bristled toothbrush to avoid irritating oral tissue.
  • Using toothpaste that doesn’t contain sodium lauryl sulfate.
  • Rinsing your mouth each day with salt water.

Do you have any personal remedies and tips that help your canker sores? Share below! We’d love to hear them and pass them along.

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