Question

The enamel is the hardest substance in our body so why can cavity only break it?

Answer 1

Answer:

Because cavity have high amount of acid

Answer 2

Enamel Is The Hardest Substance in the Body – But Did You Know It Can Break Easily? The toughest substance in your body isn't your bones — it's your dental enamel. This fact is a good thing because your dental enamel must withstand heat and cold as well as biting into hard substances