Hi rick it's very hard for me to explain what happened and even then I still can't be sure. I had diamond crown put in 2003. About two weeks following, I ended up with heart palpiations, feeling scared and hyped up/excited and unable to calm down. I lost weight and just felt different, weird and not right.

I don't know if that's what caused it, possibly it may have been mercury vapor already in the dental office (though I had no amalgams at the time, just two old composites needing redoing), and/or the local anaesthetic may have been the problem. I will never know.

I had them removed and replaced, but didn't really get better. If anything things got worse, so I have no idea what happened and simply don't trust anything now.

Sorry I'm not more clear on this, but for me it's confusing also. I am too scared to ever get it regardless. Yet I hear others do just fine! So I really don't know.