Canker sores are a form of small, shallow ulcers that appear in the mouth and can make common tasks such as talking and eating uncomfortable. Canker sores are typically caused due to stress on the soft tissues in your mouth.
 
Certain acidic and citrus foods such as lemons, oranges, strawberries, and pineapples can trigger a canker sore or even make the problem worse. Canker sores can also be caused by the following:

  • An accidental cheek bite.

  • A diet lacking in zinc, vitamin B12, iron and folate acid.

  • Emotional stress.

  • Hormonal stress during menstruation

  • A response due to an allergic reaction in your mouth.

 
There are a number of other possible causes for canker sores, including a number of different diseases such as celiac, behcet, and crohn's disease.
 
Unfortunately, there is no cure for typical canker sores. You can try to reduce their frequency by avoiding foods that irritate your mouth and avoiding irritation to the soft tissue inside your mouth.  If you have canker sores that are unusually large, last for more than three weeks or are spreading, it is recommended to contact your dentist.
 
If you have any questions about canker sore treatment or prevention, contact us at the Rideau Dental Centre by calling 613-230-7475.