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TEETH& ESOPHAGUS Dr IramTassaduq
ANATOMICAL DIVISION Crown Root
COMPONENTS OF TOOTH Enamel Dentin Cementum Pulp
ENAMEL Acellular mineralized tissue that covers the crown of toothHardest substance in the body Once formed, can't be replaced 96-98% exist mainly as hydroxyapatite crystals
CEMENTUM Covers the dentin of the root. Pale yellowishSofter and more permeable Cementocytes sharpey’s fibers
Enamel is produced from ameloblasts of the enamel organDentin is produced by neural crest derived odontoblasts of the adjacent mesenchyme
DENTIN A calcified material that forms most of tooth substanceHard, yellowish, elastic Lines surface that is in contact with pulp Secreted by odontoblast
DENTAL PULP & CENTRAL PULP CAVITY (Pulp chamber)Space occupied by pulp (highly vascular and sensitive loose connective tissue Apical foramen
SUPPORTING TISSUE OF THE TEETHAlveolar bone proper Periodontal ligament Gingiva
OVERVIEW OF GIT
FUNCTIONS Protection Absorption Secretion
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ORAL CAVITY Oral cavity consists of the mouth and its structures, which include the tongue, teeth and their supporting structures (periodontium), major.
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