I'm white and used for cutting and grinding-Riddle

Riddle 
Mehul goes to the eye doctor for a surgery. As he was scared, the doctor asks him a question to distract him.
I'm (usually) white and used for cutting and grinding. When I?m damaged, humans usually remove me or fill me. For most animals I am a useful tool. What am I?

    A tooth!

Mindyourlogic Riddle: Answer:
I?? white and used for cutting and grinding-Riddle