Me too. Anesthesia is one of my biggest fears - and working around it all the time now at the vet clinic, my fears of it have gotten worse, not better, because I see just how easily it can be screwed up or cause problems even if everything is "perfect." That's why I still have my wisdom teeth despite the fact they're impacted and have cavities. They don't hurt, so I don't see the point in getting them out.
I seem to be very hyposensitive to pain. And when it is bad enough to use painkillers, I use half of a Tylenol and I'm good for several hours. I never can see why people pop 8-10 Tylenol for a headache...
The pain that hurts worst is burns. I -hate- burns, seems as if that's one thing that I'm maybe slightly hypersensitive to. And painkillers don't work at all for burns, at least not for me.
The pain starts at the tooth, through the jaw, up through the facial cavities (nasal) and I even had an earache. Whole lot disappeared in a day or so upon extraction. Was beyond root canal therapy.
I used to gargle a lot of soluble aspirin for the pain. It worked well.