Question: what are the three categories of teeth?
Answer: Incisors – The four front teeth in both the upper and lower jaws are called incisors. ... 
Canines – There are four canines in the oral cavity. ... 
Premolars (Bicuspids) – These teeth are located behind and adjacent to the canines and are designed to crush food. ... 
Molars – The most posterior teeth in the mouth are the molars.