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| Canker Sore, Mouth Sore and Gum Sore Treatments |
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| Remember Canker sores are usually small ulcers with a white or gray base and a red border. Unlike cold sores, canker sores appear inside the mouth. And, they are not contagious. There may be only one canker sore or several and they often return. Their exact cause is uncertain but some experts believe that immune system problems, bacteria or viruses may be involved. See our Canker Sore Kits at the bottom of the page |
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