We have Incisors, Canines, Premolars and Molars that vary in size, shape, number of their roots and their location in the jaw.  

We have two sets of teeth, 32 Permanent and 20 Primary teeth, during our life time. Around six years of age Permanent teeth start replacing the baby or primary teeth that we grow shortly after birth. By around 21 years of age all of the permanent teeth have usually erupted.