As per Anon's request, a quick note on numbness. I don't think numbness is really the right word to use. In the "half-of-my-face-is-numb-from-Novocaine-at-the-dentist" type of numbness there's absolutely none. If I poke any part of my face with a pushpin I know it's there. Now there is a type of "internal-tingling-like-a-sleeping-limb-waking-up-but-without-the-pain-part" feeling when I press my lower lip, chin, and a little bit of my right cheek, but it's not painful or even annoying. In fact, sometimes I find myself playing with the tingling if I'm thinking something through. Oh, and my upper gums used to be absolutely dead to the touch which was awesome. No seriously, it was. You know how easy sitting through a teeth cleaning is when you can't feel them prodding around? It rocks. For better or worse though, the feeling has been coming back.
p.s.- Can anyone think of a reason why we even have pain receptors in our gums? So we don't FLOSS too hard? I'm willing to bet that's never happened in the history of humans or floss.