Just got back from my 3rd visit to my dentist for root canal treatment. My God, that was definitely the most pain I ever had to endure! It was so painful that many muscles in my neck and upper body trembled during the process. If I knew the pain would be that severe I would have gladly taken an injection for local anesthetic. The dentist told me AFTER that the treatment is extremely painful because for each of the FOUR roots, you get an electric charge (and contact with a rotating twisted-wire thingy) directly on your nerve! Thank God that the nerve under one of my roots was already dead. I'm told that I can expect pain for another 48 hours but boy am I happy the worst is over (I hope!).