• How long do canker sores last?

I'm 28 years old, and I have two canker sores on the left side of my mouth. I've been trying to treat them on my own with a salt-water mixture, but it's been 3 days, and I still have them. How long can canker sores last?

1 Answer

  • Dentist
  • Glendale, AZ

7-10 days is usual, and unfortunately can cause others to occur.

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