I opted not to go under, not to do anesthesia since the first wisdom tooth I had done 2 years ago was just fine using nitrous. I've always tried to avoid anesthesia whenever possible. Had the idea of going under. Funny thing is the first time I had it done, it was just a general dentist who said she felt comfortable enough to do it. No problems with the nitrous. But this time was an oral surgeon and them craziness happened. It's possible that the assistant just screwed up. I had the thing over my nose running oxygen for what seemed to be way too long. I was listening to music through headphones and the hour long track I was on had gotten at least 2/3 of the way done before they finally came back to get working. Maybe all that oxygen for 35 minutes just didn't react well once the nitrous was kicked on? But it was definitely not supposed to do what it did. The oral surgeon seemed legitimately concerned when I woke up. Texted me throughout the day to keep checking in on how I was doing.