BONE - Delta Univ · Results: Histological analysis at 3 weeks showed granulation tissue With new...
Transcript of BONE - Delta Univ · Results: Histological analysis at 3 weeks showed granulation tissue With new...
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BONE
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DEFINITION
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STRUCTURAL
CONSTITUENTS
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Osteoprogenitor cells
Osteoblasts
Osteocytes
Osteoclasts
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BONE RESORPTION
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BONE MATRIX
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Inorganic
Organic
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TYPES OF BONE
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LAMELLAR BONE
Compact
Spongy
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Incremental lines of bone
– Resting lines
– Reversal lines
– Faint black line
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Periosteum
Endosteum
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NON LAMELLAR BONE
Coarse fibered woven bone
Bundle bone
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ALVEOLAR PROCESS
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DEFINITION
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DEVELOPMENT
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ENDO-CHONDRAL BONE
FORMATION
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INTRA-MEMBRANOUS
BONE FORMATION
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STRUCTURE OF THE
ALVEOLAR PROCESS
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ALVEOLAR BONE PROPER
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A, Enamel; B, Dentin; and C, Dentino-
enamel junction
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The pulp cavity
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Teeth are composed of pulp (arrow on the second molar),
enamel (arrow on the first molar), dentin (arrow on the
second premolar), and cementum (usually not visible radio
graphically)
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Lamina dura
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Periodontal
membrane
space
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Alveolar crest is
pointed at the
anterior teeth
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Alveolar crest is flattened at the posterior
teeth and parallel to the cemento-enamel
junction of adjacent teeth
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Ladder like arrangement of bony trabeculae
(Mandible)
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Numerous, delicate irregular bony
trabeculae
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SUPPORTING ALVEOLAR
BONE
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The cortical plate
The supporting bone
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Clinical consideration
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Malposition: -5
Tilting/Tipping tooth is tilted on its long
axis
axial inclination changed
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Mesial drift
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Bony alveolus