Hi Ann,

No, I have no gaps between my back teeth. I noticed that my tooth had turned during the height of all my mercury poisoning symptoms. This tooth is right next to the tooth that I'm sure was leaking the most mercury vapor. This tooth, next to the one that has turned, had broken three years ago, and instead of crowning it, the dentist built it up with amalgam.

Yes, it has affected my bite, too...strange stuff!
Like Russ said, it must've happened all at once because I floss regularly and would've notice a gradual change.

Chloe