What did dinosaurs use their teeth for?

Dinosaur teeth were used for chewing, cutting or slicing plants, or, in meat eaters, tearing apart flesh. Dinosaurs had more teeth than humans do, and they would shed their teeth throughout their life, much like sharks do today. For example, duckbilled hadrosaurs (meaning “bulky lizards”) had hundreds of teeth waiting to replace their worn-out teeth. Other dinosaurs, such as the ornithomimosaurs (meaning “bird mimic”), had no teeth at all, but a beak similar to a bird. Some dinosaurs also had a combination of a beak and teeth.