Roughly a year ago I had a root canal on my front tooth (#5 I think?) there was a post and core placed after the RCT and the tooth was filled until a crown is put on. In the week following the treatment my tooth was loose and somewhat painful, I sw my dentist about this, and I had an infection. I was put on some powerful meds and 2 weeks later my tooth had solidified and I saw my dentist once again, at which time he took xray and said everything look great. A while (i don't remember how long) after that I had a pimple form on the gum above that tooth. If i squeeze it puss will come out now and then (no odor or taste to the puss) other times it is just a hard little bump. What the heck is this? I have read about the infection working its way out stuff etc.but my RCT was over a year ago, and my dentist took xrays?? Anybody familiar with this??