Oh yeah, I have not had a root canal in that tooth. Plus something else I should mention even though it is likely completely irrelevant. Around about the time I had the root canal I fund an enlarged lymph node in my neck. My doctor said this was likely because of the tooth infection. Of course, there was no evidence of a tooth infection at all, but this swollen node seemed to make everyone confident that my tooth was infected. I think they are likely unrelated since antibiotics did nothing for either the tooth infection or the node.