teeth& esophagus dr iramtassaduq anatomical division crown crown root root
TRANSCRIPT
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TEETH& ESOPHAGUSTEETH& ESOPHAGUS
Dr IramTassaduq
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ANATOMICAL DIVISIONANATOMICAL DIVISION
•CrownCrown
•RootRoot
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COMPONENTS OF COMPONENTS OF TOOTHTOOTH
EnamelDentin CementumPulp
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ENAMELENAMEL 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
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CEMENTUMCEMENTUM Covers the dentin
of the root. Pale yellowish Softer and more
permeable Cementocytes sharpey’s fibers
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Enamel is produced from ameloblasts of the enamel organ
Dentin is produced by neural crest derived odontoblasts of the adjacent mesenchyme
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DENTINDENTIN A calcified material
that forms most of tooth substance
Hard, yellowish, elastic
Lines surface that is in contact with pulp
Secreted by odontoblast
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DENTAL PULP & CENTRAL DENTAL PULP & CENTRAL PULP CAVITY (Pulp chamber)PULP CAVITY (Pulp chamber)
Space occupied by pulp (highly vascular and sensitive loose connective tissue
Apical foramen
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SUPPORTING TISSUE OF THE SUPPORTING TISSUE OF THE TEETHTEETH
Alveolar bone proper
Periodontal ligament
Gingiva
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OVERVIEW OF GITOVERVIEW OF GIT
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MUCOSAMUCOSA
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FUNCTIONSFUNCTIONS
Protection Absorption Secretion
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SUBMUCOSASUBMUCOSA
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MUSCULARIS EXTERNAMUSCULARIS EXTERNA
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ADVENTITIA/SEROSAADVENTITIA/SEROSA
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SUBMUCOSA
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MUSCULARIS EXTERNAMUSCULARIS EXTERNA
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