Part one of term paper
Teeth are numerous, hard tissue structures in the mouths of humans. In humans the teeth are composed of nan inner layer of dentin that, above the gum line, is covered by a layer of enamel. Called the crown, this part of the tooth is extremely hard. The root portion of the tooth is covered with a bonelike substance called cementum. The root i ...

Part two of term paper
... the ages of 6 months and 2 years. between the ages of 6 and 13 years a second (and permanent) set of teeth sequentially replaces the first. Between the ages of 18 and 21 years, 4 molars called wisdom teeth emerge. The 20 primary teeth -4 central incisors, 4 canines (cuspids), and 8 molars- begin to develop pior to birth. They are eventually replaced- beginning around the age of 6 -by 32 permanent teeth.: 4 central incisors, 4 lateral incisors, 4 cuspids, 8 bicuspids (premolars), and 12 molars. The ...