Should you experience another exposure to mercury by having fillings removed on that day, you may experience the sensations of having a really bad case of the flu for a day. Unfortunately it is. Your body must be treated properly in these events when you are trying to do the best thing for it. The order in which the old fillings are removed is another thing that can create more hazards than health. For some reason, accepted, but not totally clear, your body responds to the removal of the fillings according to their electrical charge.
Fillings are like little batteries, and they generate electrical current.
Some will read positive, and some negative when touched with an ammeter. This is similar to the test you do in a drug store when purchasing a battery for a toy. You place a probe on each end of the battery and the meter gives you a positive or negative reading along with a measure of the intensity of the charge. Evidently whether the filling is pushing electrons from the filling up into the brain, or pushing protons makes a difference to the body's own electrical system when these fillings are removed. It's rather complex, but there is a proper order to removing the fillings if one wants to have them removed without making them feel ill as a result of the process.