Dental Essay

774 WordsDec 12, 20104 Pages
Introduction Animals have teeth are adapted to their mode of feeding. Dentition of different animals suits their food requirements. Carnivores have long and strong canines that useful during hunting for holding their prey, tearing and cutting of flesh. Herbivores have many molars teeth, which have suitable shape for chewing cud. However, during holding, chewing, tearing or grinding of food, pressure is exerted on the teeth. These teeth therefore should be strong enough to withstand the force exerted during chewing. The paper discusses some of the dental supportive tissues. Periodontal Ligament At the centre of a tooth are vein, arteries and nerves. T-lymphocytes, ondontoblasts, macrophages and fibroblasts are all cells that are also found within the central part of the tooth, which forms the pulp (Clarke, 2007). Pulp is a soft tissue, which enters the tooth via the lower apex. This tissue is covered immediately by odontoblasts along the border of dentin. Odontoblasts are responsible for making the next layer, which is dentin. Periodontal ligaments, gum and alveolar bone, all make up periodontum. Cementum and the gum support in the process of chewing by anchoring the tooth to the surrounding tissues. The gum covers everything (Clarke, 2007). Periodontal ligaments and cement are connected by alveolar bone, which goes round the root of the tooth to provide support. Alveolar bone creates alveolus, which lie over the bone. The periodontal ligament is a specialized connective tissue that attaches the cementum of a tooth to the alveolar bone. Cementum and Enamel A bone like tissue that covers the root of a tooth is called cementum. Almost half of it is mainly hydroxyapatite, which is inorganic; a third of the cementum is collagen, which is organic in nature, and the rest is water. Secretions from cementoblast cells located in the pulp form this layer. It is

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