I also had to get a difficult tooth extracted and it was actually very stressful for both me and dentist. we took a break halfway through so we could both take a deep breath and this is one of the top dental surgeons in Montreal. It was a tooth that was too far filed down and thus, never adhered well to its cap (not this dentist's fault, it was a different dentist who fucked up). the dentist couldn't get a good grip on the whole tooth for most of it was inside my gum. He pretty much had to fish it out of my gum in bits and pieces. He was this close to putting his foot on my chair for additional leverage! This experience was far worse than all four root canals I've had.
Yeah, valium or a few shoots of liquor will help with the nerves.