I didn't get the gas either. If you have the option, GET THE GAS. It is hard for your brain to comprehend why there is so much crunching noise inside your skull but no pain associated with it. My legs were twitching uncontrollably since my brain *knew that it should be hurting*. Really I would rather not remember it at all. The crunching noises in my skull, the doc climbing around on my chest to get a better angle at the tooth, the other dental people hanging out in the doorway watching the procedure...it was just bad