If your not very sick then I personally think its ok to get all 7 done at one time. I got 5 at one time and it was fine (that was just one quadrant of my mouth). If you are worried and just want to play it safe then tell the dentist you would rather have 4 done at one time and then the final 3 taken out.

Chelation is very safe if you follow Andy Cutlers Frequent Low Dose protocol. Chelation can be very dangerous if you do injections (IV), because it causes a lot of mercury to redistribute to other parts of the body.