I was told by my dentist that I have an abcess above a tooth that I have already had a root canal done on 18years ago and that I have to see an endodontics for treatment. First I would like to know if they are going to do another root canal or if they're going to perform surgery through my gum to remove this ball of infection? And can only an Endodonitcs fix this problem or can a oral surgeon do this as well? If they go through my gum this would be surgry right? I would like this procdure to be covered under my medical insurance not soak up my dental, so there for I would like to understand what is going to happen with this. I'm incrediably fustrated with my dentist he could only tell me that they may or go through the tooth or the gum he was unsure.