I had all four of my impacted wisdom teeth out at once. I was gassed but it does not knock you our entirely. I can remember feeling the dentists knee on my chest and hearing the breaking of the teeth.
The worst part was my brother picked me up and had to go on a biz conference call, needless to say the call lasted longer than the original pain killer and I was dying by the time he got out and got my perscription filled.
My face was bigger than a basketbal for more than a week. My recommendation is do them all at once, don’t think they would get me back in the chair for that again.
Brian