2. Minor mouth injury

Minor mouth injury can be caused by many different things including dental work, poorly fitted dentures, braces, hard brushing, or accidentally biting your tongue or inside of your cheek. Anything that repeatedly rubs against the mouth and gums can cause an ulcer as well. Unfortunately, there is no quick fix to a minor mouth injury— it just needs some time to heal. Some things you can do to help relieve pain include:

  • Rinse mouth with warm water and salt or baking soda
  • Use milk of magnesia to the ulcer
  • Apply ice to the ulcer
  • Apply a damp tea bag to the ulcer
  • Use an over-the-counter oral topical anesthetic



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