Answer:
What dentists battle on a daily basis
It's tough as nails, Or soft as snow. People use it for their rink, Some just put in their drink.
The lunch destination of choice for teenagers and hospital employees.
It can be clear like water, but it burns like fire.
Break it and it gets better, immediately set and harder to break again.
I'm the source of all emotion but I'm caged in a white prison.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?