I've had 4 root canals, by 2 different dentists, and honestly it wasn't that bad. I suppose it would depend on the level of experience your dentist has.
My first dentist was super high tech, he had a funky machine that beeped to let him know where the nerve was. The other doctor is more old school, and awesome. He does the best work, and he makes sure you're comfortable. It's not exactly fun, but it's not horrible. On a scale of 1 through ten, I'd give it a 3 or 4, and that's just for the ick factor. LOL The pain isn't that bad.
Good luck, it'll be alright!
