Here are some of Cutler's recommendations for chelation, you could read:
http://home.earthlink.net/~moriam/Andy_dose_sched.html

I have not followed anything to a T, but done what felt right for me. I am going to start the DMSA, though, and see how that does.

Join this group, for some good reading:
http://health.groups.yahoo.com/group/frequent-dose-chelation/

I had one whole side of my mouth (2 quads), done in one day. I was scared to do it, because I had heard so many bad things about being "very sick" and having so many done at one time, but I did it, and it worked for me. That may not work for you. DO communicate with your dentist, if you don't want them all out at one time, tell her that.

The holistic dentist that I had a consult with, wanted to take every one of them out at one time. I would've let him, if I'd had the money, but I didn't, and what I did worked for me.

Check out those links, and see if they help answer any of your questions.