Thank you for your reply Bryanna!

I've had this dentist remove other teeth with mercury and I think she basically follows this protocal.

I am glad to know that this is what I need to do and don't have to worry about more extractions, at this time.

One question: do you know what the black spot on my gum near the teeth could be? It doesn't hurt when I press on it, but I just can't imagine what it could be.

Thanks again for your sharing your knowledge!
Gretchen