Clary, don't let your fillings stop you from zapping! You will benefit!!!!!!!! My best friend has about 26 caps and a couple of root canals -- she zaps her face. It makes her teeth feel better. Yes, she gets the metal taste, but it's the least of the 2 evils.
Zap, zap, zap and zap some more. Eventually, you'll get those fillings out, right?