GENERAL HISTOLOGY

Detailed explanation-1: -Enamel. Enamel is the outer most layer of the tooth that protects teeth from the elements that cause cavities. It is the hardest surface in the human body and the first line of defense against cavities. It is the visual surface of the tooth, and usually stops around the gum line.

Detailed explanation-2: -Cementum is a layer of mineralized tissue that forms the outer layer of the roots and also the inner layer of the periodontium: the complex of tooth-supporting tissues, consisting of the cementum, periodontal ligament (PDL) alveolar bone, and gingiva.

Detailed explanation-3: -Cementum is a hard, calcified layer of tissue that covers the root of the tooth. On its outer side, cementum is attached to the periodontal ligament; on its inner side, the dentin. Along with the periodontal ligament, alveolar bone and gingiva, cementum helps a tooth stay in its place.

Detailed explanation-4: -Enameli) It is a calcified substance that helps in joining the teeth in the socket2. Dentineii) It consists of connective tissue, nerve fibres, lymph and blood vessels. 3. Cementiii) It is the outermost layer of the teeth andthe hardest substance of the body.