A dentist office told me about this book. It is called
Whole-Body Dentistry by Mark A. Breiner DDS
It has alot about mercury and other things. I got if from the library. One thing that I thought was interesting was about the fillings. Not that it could be the mercury per sa but the electrical currents they generate that can cause problems in your body. He states that when problems clear up instantaneously or with a few hours, he assume it is electrical in nature because mercury does not leave the body this quickly. I haven't finished reading, but it seems to cover alot of ground. Also discusses rootcanals, tmj, flouride...