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Mouth Sores

Photo showing sores on the bottom of tongue

Dental health is not limited to your teeth. Sores or irritations can develop in and around the mouth. Fortunately, they usually heal on their own within a week or two. Mouth sores come in several different varieties and can have any number of causes, including:

  • Infections from bacteria, viruses or fungus
  • Irritation from a loose orthodontic wire, a denture that doesn’t fit, or a sharp edge from a broken tooth or filling.
  • The symptom of a disease or disorder.
Your dentist should examine any mouth sore that lasts a week or longer. For more information about specific kinds of mouth sores, please visit our pages on canker sores, cold sores, oral thrush and leukoplakia.