When I looked at my hand it was more of a situation where I was half asleep, half awake. So I suppose it was like my dreams were projecting themselves onto reality.
Also, my body for some reason has never changed in my dreams, teeth never fallen out, things have never been out of place. Then again I can't ever "feel" my body inside dreams except a few specific times. My dreams have never centered around me though, more often than not I'm not even myself in my dreams.
Whenever I look at my hand while awake I repeat this mantra while looking at it "If it looks like this I'm awake, if it looks different I'm dreaming." It serves as a good reality check too.