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Cariology (Prelims) > The Dentin-Pulp Complex and Its Role in Cariology > Flashcards

The Dentin-Pulp Complex and Its Role in Cariology Flashcards

1
Q

Largest portion of the tooth structure, extending almost the full length of the tooth

A

Dentin

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2
Q

The hardness of the dentin is about 1/5 the hardness of the enamel.

A

True

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3
Q

Both dentin and pulp are derived from where

A

Mesoderm

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4
Q

The enamel is slightly darker than the dentin

A

False

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5
Q

Distinct, large-diameter collagen fibrils

A

von Korff’s fibers

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6
Q

Formed by the elongation and growth of the cervical loop into the dental sac

A

Hertwig Epithelial Root Sheath (HERS)

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7
Q

Both primary and secondary mineralization occurred and has complete crystalline fusion

A

Globular dentin

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8
Q

Only primary mineralization occurred in the predentin and the globules do not fuse completely

A

Interglobular dentin

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9
Q

Hereditary type of dentin of dentin dysplasia where the normal enamel chips off due to lack of support by the abnormal underlying dentin

A

Dentinogenesis Imperfecta

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10
Q

Most common dentinogenesis imperfecta

A

Type II

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11
Q

Dentinogenesis imperfecta associated with osteogenesis imperfecta

A

Type I

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12
Q

Small canals that extend through the entire width of dentin, from the pulp to the DEJ

A

Dentinal tubules

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13
Q

More mineralized than intertubular dentin

A

Peritubular dentin

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14
Q

Much more permeable than root dentin

A

Coronal dentin

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15
Q

When dentin is exposed due to caries, cavity preparation, gingival recession, or attrition

A

Dentin Hypersensistivity

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16
Q

Odontoblastic processes that crossed the DEJ into the enamel

A

Enamel spindles

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17
Q

May serve as pain receptors, explaining enamel sensisitivity

A

Enamel spindles

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18
Q

Incremental lines of bands of dentin apposition similar to the incremental lines of Retzius in enamel

A

Imbrication lines of von Ebner

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19
Q

Series of dark bands which are adjoining parallel imbrication lines

A

Contour lines of Owen

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20
Q

Peripheral part of dentin beneath the root’s cementum, adjacent to the dentinocemental junction

A

Tomes Granular Layer

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21
Q

Unmineralized zone of dentin immediately next to the odontoblasts

A

Predentin

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22
Q

First predentin that forms and matures near the DEJ

A

Mantle dentin

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23
Q

Formed before completion of apical foramen and more rapidly.

A

Primary dentin

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24
Q

Formed after completion of the apical foramen and slower.

A

Secondary dentin

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25
Q

Formed as a result of localized injury to dentin

A

Tertiary dentin

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26
Q

Reaction to a long-term, low level acid demineralization in slowly advancing lesions, and can only be formed when the tooth pulp is vital.

A

Sclerotic dentin

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27
Q

Reaction to a moderate-intensity attack and has severe stimuli that can result in the formation within the pulp chamber of unattached dentin.

A

Reparative dentin

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28
Q

Reaction to severe, rapidly advancing caries characterized by very high acid levels

A

Pulpal necrosis

29
Q

Exposed portion of the reactive sclerotic dentin, resistant to acid attack, hard and darkened

A

Eburnated dentin

30
Q

Deepest zone of dentin caries lesions

A

Zone 1: Hard dentin

31
Q

Template for remineralization of intertubular dentin

A

Intact collagen

32
Q

Inner carious dentin

A

Zone 2: Firm Dentin

33
Q

Outer carious dentin

A

Zone 3: Soft dentin

34
Q

Intact smooth white lesions of discolored brown/black lesions

A

Inactive/Arrested caries

35
Q

Innermost soft, connective tissue of the tooth

A

Dental pulp

36
Q

Lines of the outer pulpal wall and consists of odontoblasts and may form secondary dentin

A

Odontoblastic layer

37
Q

Contains fewer cells than odontoblastic layer

A

Cell-free zone

38
Q

Increased density of cells and more extensive calcular supply

A

Cell-rich zone

39
Q

Center of pulp chamber

A

Pulpal core

40
Q

Function of the pulp that supplies nutrients and moisture to dentin through the blood vascular supply to the odontoblasts and their processes

A

Nutritive

41
Q

Formative/developmental function of the pulp is the production of primary and tertiary dentin by odontoblasts

A

False

42
Q

Response to irritation by mechanical, thermal, chemical, or bacterial stimuli

A

Defensive/reparative

43
Q

Adult teeth have larger pulp

A

False

44
Q

Narrowing of dentinal tubule diameter, deposition of peritubular dentin

A

Aging

45
Q

Mineralized masses of dentin either amorphous or complete with dentinal tubules

A

Denticles

46
Q

Denticles are formed during tooth development or as a response to microtrauma

A

True

47
Q

Symptom-free and normal responsive to pulp testing

A

Normal pulp

48
Q

Discomfort is experienced when a stimulus such as cold or sweat is applied and goes away within seconds following removal of stimulus

A

Reversible pulpitis

49
Q

Sharp, lingering, and spontaneous pain that may be accentuated by postural changes and OTC analgesics are usually ineffective

A

Symptomatic Irreversible Pulpitis

50
Q

Vital inflamed pulp is incapable of healing, trauma, or deep caries that would likely result in exposure

A

Asymptomatic Irreversible Pulpitis

51
Q

Death of the pulp and non-responsive to pulp testing

A

Pulp necrosis

52
Q

ADA-recommended nonrestorative treatment for cavitated caries lesions that is also topically applied

A

Silver diamide fluoride

53
Q

Cutting debris produced and unavoidably compacted into a layer on the cut surface during tooth preparation with rotary instruments

A

Smear layer

54
Q

Prevent collagen collapse with excessive air drying

A

Etched dentin

55
Q

Prevent pulpal involvement with caries or tooth wear

A

Pulp protection

56
Q

Use of copious water coolant during tooth preparation

A

Thermal medication

57
Q

Relief of pulpal inflammation, facilitation of dentin bridging

A

Pulpal medication

58
Q

Use of bases to provide resistance to thin dentin

A

Mechanical protection

59
Q

Removal of the vital coronal pulp and usually done of primary teeth without abscess and spontaneous pain

A

Pulpotomy

60
Q

Done on non-vital pulp and is complete removal of the coronal and radicular pulp

A

Pulpectomy

61
Q

Complete removal of the pulp with shaping and obturation of the canals

A

Root canal treatment

62
Q

Endodontic procedure that aims to either induce a hard tissue barrier in a tooth with open apex or the continued apical development of an incomplete root in teeth with apical periodontitis

A

Apexification

63
Q

Vital pulp therapy to encourage continued root development and maturation with normal root thickness

A

Apexogenesis

64
Q

Newer methods; allows continued root development in terms of both length and thickness

A

Revascularization and regeneration

65
Q

Dentin that is closer to the enamel is harder than dentin closer to the pulp

A

True

66
Q

Dentin formation stops when the roots of teeth are already completed

A

False

67
Q

Dentinal tubules are larger near the pulp

A

True

68
Q

Iatrogenic pulp exposure is less likely in deep carious lesions of young teeth than in aged teeth

A

False

Cariology (Prelims) (4 decks)

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