You have eight of these guys, with four on the top and four on the bottom. When kids get older, they often get four more molars all the way in the back of the mouth, one in each corner. This usually happens around age 20, and the teeth are called wisdom teeth . Wisdom teeth aren't used for anything and may not make you smarter, but some people believe that they may have been used by people millions of years ago to help them chew food. The next time you eat, do an experiment and pay attention to which teeth do which job.
Incisors do a good job of biting into that tasty treat.
It's those molars that get the job done, not the teeth in front. And how about a slice of pizza or a piece of thick bread - those canines will help you tear at the food and make quick work of that peanut butter and jelly sandwich or pepperoni pizza. Different teeth work with your tongue and lips to help you form sounds and say letters. They let us chew all different types of food, they come in different sizes for our growing mouths, and they help us talk. It's very important to treat teeth kindly, since they work so hard every day.