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Flashcards in Dentin Deck (97)
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Color of dentin?

Yellow intrinsic color

1

Characterized as positively birefringent?

Dentin

2

Organic material of dentin? (3)

  • Collagen
  • Ground substance
  • Water

3

Types of dentin. (4)

  • Primary
  • Secondary
  • Tertiary
  • Predentin/dentinoid

4

Also known as orthodentin or regular dentin?

Primary dentin

5

Other terms of tertiary dentin?

  • Reactive
  • Reparative
  • Irregular secondary dentin

6

Primary dentin is developed before or after tooth eruption?

Before tooth eruption

7

It has regularly arranged dentinal tubules?

Primary dentin

8

Peripheral layer of dentin found adjacent to the enamel in the crown and cementum in the roots?

Mantle dentin

9

Layer of dentin containing collagen alpha fibrils?

Mantle dentin

10

True or false. Incremental lines can be found in mantle dentin?

False

11

Makes up the bulk of dentin?

Circumpulpal dentin

12

Dentin consisting of beta fibrils and mucopolysaccharide grounds substance?

Circumpulpal dentin

13

Acts as a lubricant or as shock absorber?

Mucopolysaccharide

30

True or false. Dentin is hydrophilic?

True

31

Intertubular dentin consist of what type of collagen fibers?

Type 1

32

Dentinal tubules exhibit ___? shaped curvature.

S shaped

33

Regularly arranged canals from pulp to DEJ/DCJ

Dentinal tubules

34

True or false. Dentinal tubules are more pronounced in the incisal and cuspal areas.

False

35

Why are dentinal tubules few in incisal/cuspal areas?

Due to crowding of odontoblasts as more dentin is formed

36

True or false. Tubules in root dentin has less S curvature?

True

37

Types of branching. (2)

  • Dichotomous
  • Greater branching

38

Contents of dentinal tubules. (3)

  • Odontoblastic process
  • Periodontal space
  • Intratubular nerve

39

Other term for odontoblastic process?

Tome's fiber or dentinal fiber

40

Cytoplasmic extension of odontoblasts?

Odontoblastic process

41

Found between the odontoblatic process and wall of the tubule?

Periodontoblastic space

42

Periodontoblastic space contains ____?

Dentinal fluid

43

Dentinal tubules filled with air?

Dead tracts

44

Causes of dead tracts? (2)

  • Retraction of odontoblastic process
  • Death of odontoblast

45

Occurs when dentinal tubules have become occluded with calcified material?

Sclerotic dentin