anatomy and morphology of teeth
TRANSCRIPT
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ANATOMY AND MORPHOLOGY OF TEETH
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Introduction- lower and upper arch - maxillary and mandibular arch - mastication or comminution
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General anatomy of mouth- alveolar process - bony sock or alveolus- anatomical crown - anatomical root - clinical crown - clinical root
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-enamel - dentin - cementum - pulp - Pulp cavity : pulp chamber pulp canal pulp horns - cervical line/cervix/neck - dentino-enamel junction - periodontal ligament
- gingiva or gum
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Classification of teeth
- heterodont- diphyodont deciduous
permanent
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Permanent teethDeciduous teeth
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Teeth : - incisors : 2 central and lateral- canine (cuspid) 1- premolars 2 - molars 3
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Eruption of deciduous teeth 1- central incisor2- lateral incisor 3- first molar4- canine
5- second molar
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Eruption of permanent teeth 1- first molar 2- central incisor3- lateral incisor4- first premolar 5- canine 6- second premolar 7- second molar 8- third molar
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3 stages 1- primary dentition :from 6th month to 6th year2- mixed dentition :between 6th to 12th year 3- permanent dentition:after 12th year
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Surfaces of tooth :- mesial and distal- labial - lingual - incisal- buccal - occlusal
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Line angle and point angle contact area :
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Ridge : - marginal - oblique- triangular - transvers
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1 -universal system :
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:2 -palmer system
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3 -F.D.I system :
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