Pulp Flashcards
Junctions between odontoblasts? (3)
- Gap junctions
- Tight junction
- Desmosomes
Shape of odontoblasts in:
Coronal region?
Cervical?
Midroot?
Apical?
Pseudostratified;
Columnar;
Cuboidal or pyramidal;
Flattened
Allows passage of water and small molecules?
Gap junctions
Forms an impermeable barrier to fluids, ions, and molecules?
Tight junctions
Binds odontoblasts together?
Desmosomes
Other terms for cell free zone?
Zone of Weil or subodontoblastic nucleus poor zone
True or false. Cell free zone is more prominent in radicular pulp?
False. Prominent in coronal pulp
Describe the apperance of cell free zone.
Fibrous without cells
Area for mobilization of replacement of odontoblasts?
Cell free zone
Myelinated fibers of pulp?
Plexus of Raschkow
Unmyelinated fibers of pulp?
Remak’s fibers
Another term for cell rich zone?
Bipolar zone
Cell rich zone contains what type of cells? (2)
- Fibroblasts
- Undifferentiated mesenchymal cells
Components of pulp core? (4)
- Principall cells
- Immunocompetent cells
- Blood vessels
- Nerves
Principal cells of the pulp? (5)
- Odontoblasts
- Fibroblasts
- Undifferentiated ectomesenchymal cells
- Pericytes
- Macrophages
Reserve cells
Undifferentiated mesenchymal cells
Serves as contractile cells capable of vascular constriction?
Pericytes
Another term for pericytes?
Rouget’s cells
Immunocompetent cells. (3)
Macrophages
Dendritic cells
Lymphocytes
It presents antigen to lymphocytes?
Macrophages
Located peripherally and functions to presents antigen to T cells?
Dendritic cells
Only non phagocytic immunocompetent cells?
Dendritic cells
Involved in specific immune response?
Lymphocytes
Vessels of the pulp?
Superior and inferior alveolar arteries and veins
Innervation of the pulp? (2)
- Trigeminal nerve
- Superior cervical ganglion
True or false. Plexus of raschkow is absent in radicular pulp.
True
Embryonic origin of pulp?
Ectomesenchyme
Apical boundary of dental papilla?
Epithelial diaphragm
Epithelial diaphragm is formed when HERS bends at what angle?
45% angle
Progressive narrowing of the pulp?
Pulp recession
Pulp recession is due to continuous deposition of?
Secondary dentin
Calcifications of the pulp?
Pulp stones
Another term for pulp stone?
Denticles
True or false. Denticles appear in normal teeth.
True. Also in injured
True or false. Denticles maybe present only after eruption of teeth?
False. Also in unerupted tooth
Type of denticle: Has tubules radiating from the center
True denticles
Non specific calcification of pulp?
False denticles
Type of denticle characterized by concentric layers of mineralization?
False denticles
When denticle is completely surrounded by the pulp, it is called?
Free denticle
When denticle is partially attached to the dentinal wall, it is called?
Attached denticle
Another term for attached denticle?
Adherent denticle
When denticle is completely surrounded by dentin?
Embedded denticle
Another term for embedded denticle?
Interstitial denticle
Cause of embedded denticle?
Due to continuous deposition of dentin
Denticle that follows the course of blood vessels and nerves?
Fibrillar or diffuse denticle
Appears more in root canal
Denticles according to form. (3)
- Nodular
- Amorphous
- Fibrillar/diffuse
Occurs when fibrous elements increases and cellular elements decreases?
Fibrosis of the pulp
Decrease in size of the pulp?
Atrophy of pulp
When pulp assumes appearance of a net?
Reticular atrophy
Chronic pathological processes/therapeutic measures in pulp? (3)
- Deep carious lesions
- Pulpal abscesses
- Chronic cellular infiltrations
Causes injudicious or iatrogenic therapeutic measures? (3)
- Cavity preparation without water
- Over reduction of dentin
- Non pulp-friendly materials
Progressive destruction of dentinal tubules causes?
Internal root resorption
Probable causes of internal root resorption (3)
- Trauma
- Caries and periodontal infections
- Excessive heat during restoration
Cells capable of resorbing tissues?
Odontoclasts
