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Age changes in Enamel, Dentin and Pulp
In this video you are going to learn what are the age changes in Enamel, Dentin and Pulp.
Content-
1. Definition
2. Age Changes in Enamel
MACROSCOPIC
-Becomes darker
-Attrition, Abrasion, Erosion
-Longitudinal cracks
MICROSCOPIC
- Decreased - enamel rod ends
- perikymata
- permeability to fluids
- Increase in nitrogen and fluorine
- Increased resistance to decay
3. Age Changes in Dentin
Two major changes in dentin:
-Formation of secondary dentin.
-Sclerosing or obturation of the dentinal tubules.
4. Age Changes in Pulp
-Reduction in the size and volume of the pulp as a result of a continuous deposition of dentin.
-Decrease in the number of cells and apparent increased fibrosis with time, may not be from continued formation of collagen but may be due to the persistence of connective tissue sheath in an increasingly narrow pulp space.
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