Humans have different types of teeth because each one has a specific job when we eat. Incisors cut, canines tear, premolars crush and molars grind food, giving

Humans have different types of teeth because each one has a specific job when we eat. Incisors cut, canines tear, premolars crush and molars grind food, giving our mouths a whole system for handling everything from meat and nuts to fruits and grains. And there's actually a reason we have multiple …