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Oral Histology > Pulp > Flashcards

Pulp Flashcards

0
Q

Junctions between odontoblasts? (3)

A
  • Gap junctions
  • Tight junction
  • Desmosomes
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1
Q

Shape of odontoblasts in:

Coronal region?

Cervical?

Midroot?

Apical?

A

Pseudostratified;

Columnar;

Cuboidal or pyramidal;

Flattened

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2
Q

Allows passage of water and small molecules?

A

Gap junctions

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3
Q

Forms an impermeable barrier to fluids, ions, and molecules?

A

Tight junctions

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4
Q

Binds odontoblasts together?

A

Desmosomes

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5
Q

Other terms for cell free zone?

A

Zone of Weil or subodontoblastic nucleus poor zone

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6
Q

True or false. Cell free zone is more prominent in radicular pulp?

A

False. Prominent in coronal pulp

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7
Q

Describe the apperance of cell free zone.

A

Fibrous without cells

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8
Q

Area for mobilization of replacement of odontoblasts?

A

Cell free zone

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9
Q

Myelinated fibers of pulp?

A

Plexus of Raschkow

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10
Q

Unmyelinated fibers of pulp?

A

Remak’s fibers

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11
Q

Another term for cell rich zone?

A

Bipolar zone

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12
Q

Cell rich zone contains what type of cells? (2)

A
  • Fibroblasts
  • Undifferentiated mesenchymal cells
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13
Q

Components of pulp core? (4)

A
  • Principall cells
  • Immunocompetent cells
  • Blood vessels
  • Nerves
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14
Q

Principal cells of the pulp? (5)

A
  • Odontoblasts
  • Fibroblasts
  • Undifferentiated ectomesenchymal cells
  • Pericytes
  • Macrophages
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15
Q

Reserve cells

A

Undifferentiated mesenchymal cells

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16
Q

Serves as contractile cells capable of vascular constriction?

A

Pericytes

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17
Q

Another term for pericytes?

A

Rouget’s cells

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18
Q

Immunocompetent cells. (3)

A

Macrophages

Dendritic cells

Lymphocytes

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19
Q

It presents antigen to lymphocytes?

A

Macrophages

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20
Q

Located peripherally and functions to presents antigen to T cells?

A

Dendritic cells

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21
Q

Only non phagocytic immunocompetent cells?

A

Dendritic cells

22
Q

Involved in specific immune response?

A

Lymphocytes

23
Q

Vessels of the pulp?

A

Superior and inferior alveolar arteries and veins

24
Q

Innervation of the pulp? (2)

A
  • Trigeminal nerve
  • Superior cervical ganglion
25
Q

True or false. Plexus of raschkow is absent in radicular pulp.

A

True

26
Q

Embryonic origin of pulp?

A

Ectomesenchyme

27
Q

Apical boundary of dental papilla?

A

Epithelial diaphragm

28
Q

Epithelial diaphragm is formed when HERS bends at what angle?

A

45% angle

29
Q

Progressive narrowing of the pulp?

A

Pulp recession

30
Q

Pulp recession is due to continuous deposition of?

A

Secondary dentin

31
Q

Calcifications of the pulp?

A

Pulp stones

32
Q

Another term for pulp stone?

A

Denticles

33
Q

True or false. Denticles appear in normal teeth.

A

True. Also in injured

34
Q

True or false. Denticles maybe present only after eruption of teeth?

A

False. Also in unerupted tooth

35
Q

Type of denticle: Has tubules radiating from the center

A

True denticles

36
Q

Non specific calcification of pulp?

A

False denticles

37
Q

Type of denticle characterized by concentric layers of mineralization?

A

False denticles

38
Q

When denticle is completely surrounded by the pulp, it is called?

A

Free denticle

39
Q

When denticle is partially attached to the dentinal wall, it is called?

A

Attached denticle

40
Q

Another term for attached denticle?

A

Adherent denticle

41
Q

When denticle is completely surrounded by dentin?

A

Embedded denticle

42
Q

Another term for embedded denticle?

A

Interstitial denticle

43
Q

Cause of embedded denticle?

A

Due to continuous deposition of dentin

44
Q

Denticle that follows the course of blood vessels and nerves?

A

Fibrillar or diffuse denticle

Appears more in root canal

45
Q

Denticles according to form. (3)

A
  • Nodular
  • Amorphous
  • Fibrillar/diffuse
46
Q

Occurs when fibrous elements increases and cellular elements decreases?

A

Fibrosis of the pulp

47
Q

Decrease in size of the pulp?

A

Atrophy of pulp

48
Q

When pulp assumes appearance of a net?

A

Reticular atrophy

49
Q

Chronic pathological processes/therapeutic measures in pulp? (3)

A
  • Deep carious lesions
  • Pulpal abscesses
  • Chronic cellular infiltrations
50
Q

Causes injudicious or iatrogenic therapeutic measures? (3)

A
  • Cavity preparation without water
  • Over reduction of dentin
  • Non pulp-friendly materials
51
Q

Progressive destruction of dentinal tubules causes?

A

Internal root resorption

52
Q

Probable causes of internal root resorption (3)

A
  • Trauma
  • Caries and periodontal infections
  • Excessive heat during restoration
53
Q

Cells capable of resorbing tissues?

A

Odontoclasts

Oral Histology (11 decks)

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