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Oral Histology > Pulp > Flashcards

Flashcards in Pulp Deck (54):
0

Shape of odontoblasts in:

Coronal region?

Cervical?

Midroot?

Apical?

Pseudostratified;

Columnar;

Cuboidal or pyramidal;

Flattened

1

Junctions between odontoblasts? (3)

  • Gap junctions
  • Tight junction
  • Desmosomes

2

Allows passage of water and small molecules?

Gap junctions

3

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

Tight junctions

4

Binds odontoblasts together?

Desmosomes

5

Other terms for cell free zone?

Zone of Weil or subodontoblastic nucleus poor zone

6

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

False. Prominent in coronal pulp

7

Describe the apperance of cell free zone.

Fibrous without cells

8

Area for mobilization of replacement of odontoblasts?

Cell free zone

9

Myelinated fibers of pulp?

Plexus of Raschkow

10

Unmyelinated fibers of pulp?

Remak's fibers

11

Another term for cell rich zone?

Bipolar zone

12

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

  • Fibroblasts
  • Undifferentiated mesenchymal cells

13

Components of pulp core? (4)

  • Principall cells
  • Immunocompetent cells
  • Blood vessels
  • Nerves

14

Principal cells of the pulp? (5)

  • Odontoblasts
  • Fibroblasts
  • Undifferentiated ectomesenchymal cells
  • Pericytes
  • Macrophages

15

Reserve cells

Undifferentiated mesenchymal cells

16

Serves as contractile cells capable of vascular constriction?

Pericytes

17

Another term for pericytes?

Rouget's cells

18

Immunocompetent cells. (3)

Macrophages

Dendritic cells

Lymphocytes

19

It presents antigen to lymphocytes?

Macrophages

20

Located peripherally and functions to presents antigen to T cells?

Dendritic cells

21

Only non phagocytic immunocompetent cells?

Dendritic cells

22

Involved in specific immune response?

Lymphocytes

23

Vessels of the pulp?

Superior and inferior alveolar arteries and veins

24

Innervation of the pulp? (2)

  • Trigeminal nerve
  • Superior cervical ganglion

25

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

True

26

Embryonic origin of pulp?

Ectomesenchyme

27

Apical boundary of dental papilla?

Epithelial diaphragm

28

Epithelial diaphragm is formed when HERS bends at what angle?

45% angle

29

Progressive narrowing of the pulp?

Pulp recession

30

Pulp recession is due to continuous deposition of?

Secondary dentin

31

Calcifications of the pulp?

Pulp stones

32

Another term for pulp stone?

Denticles

33

True or false. Denticles appear in normal teeth.

True. Also in injured

34

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

False. Also in unerupted tooth

35

Type of denticle: Has tubules radiating from the center

True denticles

36

Non specific calcification of pulp?

False denticles

37

Type of denticle characterized by concentric layers of mineralization?

False denticles

38

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

Free denticle

39

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

Attached denticle

40

Another term for attached denticle?

Adherent denticle

41

When denticle is completely surrounded by dentin?

Embedded denticle

42

Another term for embedded denticle?

Interstitial denticle

43

Cause of embedded denticle?

Due to continuous deposition of dentin

44

Denticle that follows the course of blood vessels and nerves?

Fibrillar or diffuse denticle

Appears more in root canal

45

Denticles according to form. (3)

  • Nodular
  • Amorphous
  • Fibrillar/diffuse

46

Occurs when fibrous elements increases and cellular elements decreases?

Fibrosis of the pulp

47

Decrease in size of the pulp?

Atrophy of pulp

48

When pulp assumes appearance of a net?

Reticular atrophy

49

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

  • Deep carious lesions
  • Pulpal abscesses
  • Chronic cellular infiltrations

50

Causes injudicious or iatrogenic therapeutic measures? (3)

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

51

Progressive destruction of dentinal tubules causes?

Internal root resorption

52

Probable causes of internal root resorption (3)

  • Trauma
  • Caries and periodontal infections
  • Excessive heat during restoration

53

Cells capable of resorbing tissues?

Odontoclasts