Do you know how many types of teeth you have? A full set of human adult teeth has 32 teeth total, and is made up of 4 different types of teeth. Each tooth type has their own unique function and purpose, and together they work to allow us to eat and digest food efficiently. The 4 Different Types of Teeth: Incisors : These are the four front and center teeth on both our upper and lower jaws, for a total of 8 incisors. We have two central incisors (the very middle two teeth) and