We changed insurance recently and I was able to get all of my mercury fillings removed. I spaced it over 3 visits: upper right quadrant (2 fillings), upper (3) and lower left (2) quadrants, and lower right (2) quadrant.
Doing one side all at once was pretty tough, I really don't ever want to do that again, but I was trying to save on gas, it is an hour drive to the dentist. My face has been pretty sore. He even used my teeth as an example for a paper he was writing.

He took pictures of before and after.
The dentist I used had a vent placed right by my face that pulled the gasses away from us, he used a dam to suck the mercury away as soon as he removed it. I did not have any mercury to swallow (YIPPEE!). They rinsed and suctioned everything out very well. I was super impressed with this Christian man, and he didn't charge that much, about
$100-150 per tooth, depending on size of filling. Insurance will not cover it all, so we will pay alot of the cost, but it is well worth it for me.
I didn't have serious crippling problems, but I did have nagging overall health problems. Since having them removed, my temperature has leveled out at about 98.6, mine used to be normal at 96- I was having hypothyroid symptoms, my cycle is normalizing, I sleep SO good at night now, with dreams, I don't know how long it has been since I slept like this, I didn't realize how bad it was. Also, I have severe allergies, I am hoping the removal helps them somewhat, I have no metal taste in my mouth now, and I have an overall good healthy feeling. PRICELESS!
During the weeks he was removing them, I was taking high doses of vit C to keep the mercury from being absorbed in my body. After he took the mercury out, I would take activated charcoal in water to flush my body.
This is my experience, I hope it was worth reading.