What I don't understand is why they use "hard" anesthetics in the US, and Canada as well, obviously. Especially for children. When I watch videos of it, they always get nitrous oxide or something else which makes you drowsy. This is really unnecessary.
When I got my 4 wisdom teeth pulled out, I got nothing more than a local anesthesia (gingiva and tooth nerve). I think it was 2 shots per teeth and that's it. They pulled two on one side, and 3 weeks later the other two on the other side. I didn't feel anything. A few hours later, at home, when the anesthesia ceases, you take your painkiller (only a tablet) and that's it. The only unpleasant thing is the after-bleeding. The next day I already could eat almost normally, but just had to care. There were no "craters" since they put cotton sticks into it, which got pulled out a few weeks later. No pain, no insensibility. It only felt a little cold the first day (after they pulled out the cotton sticks).