Ugh

Having a crown put on your tooth when the freezing doesn't work is not a pleasant experience. It's not the dentist's fault, he put four rounds of freezing in, including the kind that goes into the bone, and I still felt it. Mum thinks I have aberrant nerves (basically, they ain't where they should be). She has the same problem.

Still, ouch.

ETA: I just found out 'freezing' is a Canadianism. What do the rest of you call local anaesthetic?