They're small crystals, diamonds, or charms that are literally glued to the enamel of your teeth. Tooth gems are akin to grills, popularized by African American hip-hop artists in the '80s and '90s.

Let's investigate... A TikToker said she used a nail file to grind down her teeth, which is why she no longer has "American Girl doll teeth." "I used a nail file on my teeth when I was 14 so I no ...