Hmm, that's a tough one.
Overall, I think the fact that you're pulling your own teeth out, is a sign of control, or perhaps I should say assumed control. Blood that isn't extremely gory I kind of put with a sign of renewal or energy, aka "Your blood is flowing", kind of like andreas' dream. Could be totally wrong though. Was the blood causing you some distress, or the situation as a whole? It sounds like it wasn't, so this is kinda the best I can come up with for now.
The 7 seconds dream also, along the lines of control, sounds to me like some kind of thought of inevitability towards *something* that you want to stop from happening, and the thought if the inevitable conclusion (death to me is a sign of change, which can be very distressing - I know it is for me

). So some kind of resistance to change? Denial of reality? Illusion of control, but the conclusion is already predetermined in your mind, or by society, etc. Just a guess. Perhaps a longstanding repression of something, a memory, a truth of life, something... It's a toughy without more of a 'storyline' to go off of - I often think the themes of a dream are more important than the actual details.
Hope some of that makes sense. Kind of pulling at strings for these (or teeth, as it were

).