There are 32 adult or permanent teeth: 4 upper and 4 lower incisors, 2 upper and 2 lower canines, 4 upper and 4 lower premolars, and 6 upper and 6 lower molars. Up until age 13, 28 of these 32 teeth have usually erupted, or appeared above the gumline. The last 4 permanent teeth to appear, called the wisdom teeth, typically erupt between 17-21 years of age. For more information on permanent teeth, you can visit: http://users.forthnet.gr/ath/abyss/dep1172.htm
Adult humans have a complete set of 32 permanent teeth, of four different teeth types. Sixteen permanent teeth at the top and sixteen at the bottom jaw : 8 incisors, 4 canines, 8 premolars, and 12 molars which include the four wisdom teeth.