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1. www.webmd.com › oral-health › canker-soresCanker Sores: Causes, Symptoms, Treatments, and Remedies - WebMD

   www.webmd.com › oral-health › canker-sores

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   2023年9月5日 · Canker sores are small, shallow wounds in your mouth that can make eating and talking uncomfortable. Learn more about canker sore causes, symptoms, diagnosis, treatment, home remedies, and prevention.