Teeth are structures useful for biting, tearing, chewing and grinding. All mammals have more or less same construction of tooth.A vertical section of a tooth shows three parts viz the crown, the neck and the root. Crown is the part lying above the gum, the neck is the part in level with the gum and the root is the part buried in the sockets of the jaw bones. The white part of the tooth is known as the enamel. This is the hardest substance present in the body. The enamel is the non living...
