Sorry, I didn't specify- I have another root canaled and gold crowned tooth (no implant) right next to the implant. I asked the dentist that did it if he put any mercury on that tooth and he said yes- so that was the one I was referring to. Still suffering from major brain fog, forgive me. =) I'm going to Mexico on the 22nd for my revision, SO exciting. I know it's the electromagnetic fields that are bothering me... I can't even go within 1/2 mile of a power line without getting a terrible headache. I think something with my implant shifted, and there must be some metal touching metal, because the galvanization has been terrible lately.