Hi
I have a question....I have a rootcanal in the back molar...had it about 2 years ago...I went to the dentist because it was hurting and he put me on antibiotics and said it lookes as if the root canal did not take???? Antibiotics got rid of the pain...that was about 6 months ago...now I am hurting again and a small , ***** blister keeps forming on the side of my gum where the bad tooth is...what is this blister? I pop it, it goes away for a day or so and comes back, I've never had anything like this before...
Thanks for any advice...