GRILL$$$.
Humans have a thing with flashing our money, from famous rappers to that dude down the street who spends all his $$$ on grills and bottles in the club (but still lives with his mum).
Gold-plated, bejewelled teeth are just the beginning of how with flash our cash.
Where did this fascination come from coated our teeth in precious metals? Apparently to Nat Geo, it goes back to the caveman days.
Educate yo self.