Pulp is composed mainly of loose connective tissue blood vessels nerve endings

Pulp is composed mainly of loose connective tissue

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Pulp is composed mainly of loose connective tissue, blood vessels & nerve endings Formation – external portion of the pulp chamber is lined by odontoblasts (dentin- forming cells); the function of these odontoblasts is in the formation of dentin; odontoblasts appear as a layer of cells between the pulp & the dentin Nutrition – the pulp supplies the tooth with nutrients necessary for the organic portion of the tooth; also supplies moisture for the tooth to prevent its desiccation (drying) Sensation – pulp has a very extensive nerve supply; whenever an external stimulus traumatizes a tooth, the pain is transmitted by the nerves and alerts the brain to the presence of a toothache
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Defense – main function of the pulp is in the formation of secondary dentin for protection; the blood supply will form defense cells such as macrophages & fibrocytes for the protection of the tooth Dentin Material that makes up the hard structure of a tooth Harder than bone but softer than enamel Covered by the cementum in the root area & enamel in the crown area Majority of dentin is composed of inorganic materials (70%) mainly calcium Continually formed throughout the life of the tooth; thickens & eventually invades the pulpal chamber Forms the outside of a tooth near the enamel & grows inward towards the pulp Main function: pulpal protection – if dentin is traumatized by bacteria, decay, cavity preparation or wearing away, it changes formation Forms a new layer called the irregular secondary dentin next to the pulpal wall Dentin is dense and actually forms a layer of insulations over the pulp Alveolar Process (jawbone) The thickened ridge of bone that contains the tooth socket (alveolar bone) Found on both the maxilla & the mandible Common ailment affecting the alveolar process is called dry socket (occurs when a blood clot is lost from an extraction site prematurely) Cementum Very dense tissue that covers the anatomical root of the tooth Approximately 55% is organic material (mainly calcium salts) & 45% organic material (mainly collagen) A light yellow color & regenerates by forming new layers over older ones Covers the anatomical root & meets the anatomical crown at the cementoenamel junction primary function of cementum is to provide an attachment for the periodontal ligaments to anchor teeth to the bony socket walls formed throughout the life of a tooth when a tooth rooth fractures, new cementum formed may replace the lost tissue, helping to repair it Periodontal Ligament attaches to the cementum, holding the root of a tooth in the alveolar ridge made of tough fibrous connective tissue that surrounds the root & is about a quarter to a tenth of a millimeter thick it can be seen on dental x-rays as a black line surrounding the root abnormal widening is a sign of overloading & trauma from tooth grinding or biting irregularity groups of fibers in the periodontal ligament run in several different directions which
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