May irritate: you can try rinsing with the Colgate mouthwash and see if it irritates your ulcer. I'd advise using Rincinol by Butler Gum to help sooth the ulcer which should normally take a little over a week to resolve. If that doesn't help your Dentist can prescribe a special mouthwash to alleviate the discomfort. If it is still persistent have your dentist examine it. Hope you feel better.
Answered 2/19/2015
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