Teeth implant image showing a transparent view of a dental implant on the mandible (lower jaw) Humans have 20 primary teeth and 32 secondary teeth during their lifetime, the latter being permanent. Human teeth are made up of 20 primary teeth and 32 secondary permanent teeth during a lifetime. Teeth comprise of 12 molars, 8 incisors, 8 bicuspids or premolars, 4 cuspids or canines and 4 wisdom teeth.