Have you asked about Intravenous Sedation ,it is wonderful, you are not put out as in a General, but you won't remember a thing, but the dentist can talk to you and get you to co-operate like opening your mouth etc, and you will feel no pain during it what so ever, I had all my teeth filled this way as I had quite a lot done at once, root canals etc, it was a while back now, but it is still used here in NZ, I woke up feeling a little groggy but nothing like when you have a general, ask about it.

Laughing gas is often used for childbirth, I had it for my daughter's birth, so I am sure it would work fine for the tooth extraction too.