Given a free hand, your dentist will make the small hole in your tooth much bigger with his pneumatic high speed drill. He will then undercut your tooth in order to create a cavity the shape of a vase in which they can then force this grey shit called amalgam into your tooth. It not only looks awful, but as amalgam contains mercury, it probably slowly starts poisening your system from the minute you shut your mouth.
Yeah, yeah, I hear you say - dentists have been using amalgam for decades and if it was so bad, why would they still be using it?
Well who knows? The alternative is white epoxy. It takes perhaps 10 minutes longer to do an epoxy filling. You can chew on it immediately afterwards and being white, you can't even really see it. Which lasts longer? - I don't have a clue and I'm not a dentist, but given the choice, I will never have another amalgam filling - ever!
What have you got? And who can lay claim to my brother's feat - 40 years old and not a single filling thus far.