Mercury amalgam

Jack visits a new dentist.

...

Dentist: Open wide. That’s it. Ooh.

Jack: Huh?

Dentist: You have quite a few older fillings.

Jack: Splutter.

Dentist: Those older ones are amalgam. Mercury. You suffer from headaches?

Jack: Eerh.

Dentist: I suggest we take out the old mercury amalgam fillings and replace them with newer non-toxic fillings.

Jack: aah..cost?

Dentist: Don’t think about the cost. Think about how good you’ll feel without headaches. You want to lower the risk of Alzheimer’s, don’t you? You really want a headful of mercury?

Jack: Aaaah?

Dentist: I thought so. Let’s get to work. Nurse!

...