Tooth Enamel Erosion
Tooth Enamel Erosion is when acids wear away the hard outer layer of your teeth.
Think of it this way
Vinegar left in a bowl slowly eats away the shiny glaze on a ceramic tile. The glaze is the hard outer layer, and the vinegar is the acid. Over time, the surface gets rough and dull where the glaze wore off. Tooth enamel erodes the same way — acids sit on the tooth surface and dissolve the hard outer shell.
Explaining tooth enamel erosion by grade level
Your teeth have a hard shell that keeps them strong. Soda and juice have acids that can eat away at that shell. You can test this with an egg, since the shell acts like a tooth. Soak it in soda and the shell gets soft and thin.