Mercury lowers the immune system to make you suseptible to whatever diseases and/or conditions you as an individual are going to get, so yes, indirectly, it could have. It is not from the drilling of the tooth, because infections take a few days to develop, so that infection was already in the works. It is the lowering of the immune system the amalgams do that cause illness and also prevents your body from fighting illnesses on it's own as it is designed to do. You are wise not to get a root canal. The chills sounded a little odd to me, because while I do know drilling out mercury can cause flu-like symptoms, I rarely hear of it, probably because I have always worked with Biologic Dentists. I am glad you pursued it and they found your kidney infection.