Is it possible my dentist caused my tooth infection when I received my veneers? Should I be responsible for the bill to repair?

I can't comment on whether or not your dentist caused the nerve to die without seeing x-rays or the status of your teeth prior to being treated. I will, however, tell you that usually when something like this happens there is already an underlying problem with the tooth to begin with. When the dentist then works on that tooth, the nerve, which is already irritated, gets kicked over the edge and reacts the way your tooth reacted. In terms of helping with the fee, that's an individual response, and everyone practices differently. I've had times where I've adjusted fees for certain situations and not adjusted fees as well. I would have you discuss this with your dentist. We're typically pretty reasonable people and I'm sure he/she wants you to be happy in the long run. I hope this helps!