Tips on Preventing Canker Sores from the ADA
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Watch this video about canker sores on HowStuffWorks. Canker sores are small, non-transferable ulcers in the mouth. Learn how to detect and prevent canker sores in this video from the American Dental... (more info)

Watch this video about canker sores on HowStuffWorks. Canker sores are small, non-transferable ulcers in the mouth. Learn how to detect and prevent canker sores in this video from the American Dental Association.

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