chew
Chemical
Molars and the bath teeth that crush and grind food!
premolars
molars
No existing bird of any species has teeth. Birds have beaks.
All molars are teeth adapted for crushing and chewing food.
physical
the front teeth sre for ripping the food, the back teeth are for grinding the food
The larger back teeth are used for crushing and chewing things, which the narrower and sharper front teeth are for biting and cutting into food.
mash, nash CHEW!
Panda's eat there food by picking it up with their front paws and crushing their food with there teeth and paws, then they eat.
Crushing large chunks of food, or chewing, generally. You use your front teeth for the biting, and the back for the chewing. That simple!