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What can I do to prevent canker sores?

Joan Haizlip, MSN
Cardiology (Cardiovascular Disease)
You can prevent canker sores by knowing the 'triggers' that cause them. For some people these triggers are:
  • spicy, salty, or acidic foods like pretzels, chips, grapefruits, oranges and pineapple
  • talking and eating at the same time
It's also important to use good oral hygiene. Brush your teeth after you eat and use dental floss. Using a soft toothbrush can also prevent irritation of your mouth.  
General prevention of canker sores includes:       
  • Daily oral hygiene
  • Use a soft or extra-soft bristled toothbrush
  • Avoid salty, spicy, or acidic foods or drinks such as lemons, tomatoes, oranges or orange juice
  • Avoid foods that you know you're sensitive or allergic to
  • Try to avoid stressful situations
  • Eat a balanced diet with enough folic acid, vitamin B12, and iron

Practicing good oral hygiene is a good preventative measure for many oral health problems. This includes brushing your teeth twice a day, flossing, eating a well-balanced diet and seeing your dentist regularly. Unfortunately it is not possible to entirely prevent canker sores.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.