Can canker sores be prevented?
Although there is no cure for canker sores -- and they often recur -- you may be able to reduce their frequency by:
1. Avoiding foods that irritate your mouth, including citrus fruits, acidic vegetables, and spicy foods
2. Avoiding irritation from gum chewing
3. Brushing with a soft-bristled brush after meals and flossing daily, which will keep your mouth free of foods that might trigger a sore
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