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TEETH& ESOPHAGUS Dr IramTassaduq
ANATOMICAL DIVISION Crown Crown Root Root
COMPONENTS OF TOOTH Enamel Dentin Cementum Pulp
ENAMEL Acellular mineralized tissue that covers the crown of tooth Hardest 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 yellowish Softer and more permeable Cementocytes sharpeys fibers
Enamel is produced from ameloblasts of the enamel organ Dentin is produced by neural crest derived odontoblasts of the adjacent mesenchyme
DENTIN A calcified material that forms most of tooth substance Hard, 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 TEETH Alveolar bone proper Periodontal ligament Gingiva
OVERVIEW OF GIT
FUNCTIONS Protection Absorption Secretion
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