Harder And Harder

Riddle: I am very important, but get treated poorly when people neglect me. I am part of a living thing. What am I?

Answer: Teeth.

Source: https://www.riddles.com/index.php/3492

I am very important, but get treated poorly when people neglect me. I am part of a living thing. What am I? — Harder and Harder by Caitlin Berger v1.

Riddle: I am very important, but get treated poorly when people neglect me. I am part of a living thing. What am I? Answer: Teeth. — by Caitlin Berger v2.