Root canal... Experts please reply
I had a root canal started today and even though the dentist numbed me with 3 or 4 different shots, I still felt HORRIBLE pain during the drilling! It literally felt like an electrical wire in my teeth! He had just begun the process, he was using some vibrating tool to open up the tooth. For the first few minutes the vibration didn't bother me. But he must have hit the nerve and I SCREAMED! I was numbed pretty well so I don't understand why I still felt pain! Any thoughts as to why this happened? Why did I still feel pain?
Any answers would be appreciated!