I had a root canal treatment on tuesday as I had had an abscess. I left it so long as I am fearful of of dentist. Lots of stories to say how horrific procedure and perhaps for some it is. However I wondered why I was so nervous no worse than an ordinary filing. However a couple of points which I want to share as I really researched this. Firstly make sure you tell your dentist your full medical history secondly ask for the non adrenalin pain injection and know that there is research to say that abscess can cause problem and affect the heart. My dentist made that very clear. Just wanted to share.