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Pulp
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Pulp has what 3 functions?
Sensory
Nutritional
Protective
The Pulp Chamber has 2 main divisions:
Coronal (Crown)
Radicular (Root)
Pulp Chamber
Contains the mass of the pulp
Shape is individualized
Has TWO main divisions:
Coronal
Radicular
Coronal Pulp
Located in the crown
Pulp horns extend in the cusps of posterior teeth (Buccal cusp of premolars & mesiobuccal cusp of molars)
Radicular Pulp
aka "Root Pulp/ Pulp Canal"
Extends from the Coronal pulp to the apex
Apical Foramen
Opening from the pulp at the apex
Surrounded by cementum
Allows nerves to enter and exit from the PERIODONTAL LIGAMENT
Accessory Canals
Aka "Lateral Canals"
Extra openings
HERS encounters a blood vessel during root formation
Types of CELLS in the pulp
Fibroblasts
Odontoblasts
Undifferentiated Mesenchymal
White & Red blood cells
Fibroblasts
Largest group of cells
Odontoblasts
Second largest group of cells
Along the outer pulpal wall
Undifferentiated Mesenchymal Cells
Transform into fibroblasts and odontoblasts during injury
Types of FIBERS in pulp
Collagen
Reticular
*NO ELASTIC FIBERS*
Types of NERVES in pulp
Myelinated (axons of sensory or afferent neurons)
Unmyelinated
Pulps Stones
aka DENTICLES
Masses of calcified dentin
Free or Attached
Formed during tooth development and aging
Radiopaque
FOUR microscopic zones
Odontoblastic
Cell-Free
Cell-Rich
Pulpal Core
Odontoblastic Layer
Closest to the dentin
Lines the outer pulp wall
Forms secondary or tertiary dentin
Has the MOST cells
Cell-Free Zone
Not "cell free"
No secondary or tertiary dentin
Newly formed dentin may encroach on this zone
Pulpal Core Zone
The most innermost zone of the pulp
Pulpitis
Inflammation of the pulp
Occurs with
: Extensive caries, Cavity prep, Traumatic injury
Reversible Pulpitis
Pain occurs when a stimulus is applied to the tooth
TREATMENT
: Caries removal
Irreversible Pulpitis
Pain occurs spontaneously
Hard to locate
TREATMENT
: Root canal or extraction
AGE related changes in pulp
Becomes more fibrotic
Reduced regenerative capacity
Pulp cavity becomes smaller
Author
svisperas
ID
91733
Card Set
Pulp
Description
Pulp
Updated
6/23/2011, 3:31:07 AM
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