Our different types of teeth help us cut ... Molars are the tough teeth all the way in the back of the mouth that have several points and ridges. They handle about 90 percent of your chewing.

Our teeth will change with age. So, the teeth you have when you are a baby aren't the same as the one's you will have as an adult. Our teeth will change with age. So, the teeth you have when you ...

And since geckos can live for 6 to 10 years, they'll grow anywhere from 1,800 to 4,000 teeth in a lifetime! It's all thanks to a special type of cell in their gums, called stem cells. Stem cells ...