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CARIOLOGY > Lecture 3 (Dental Histology) > Flashcards

Lecture 3 (Dental Histology) Flashcards

1
Q

96% inorganic and 4% organic

A

Enamel

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2
Q

protective covering of crown dentin and resist forces of mastication

A

Enamel

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3
Q

What are the characteristics of enamel:

A
  • translucent
  • permeable
  • yellowish white to grayish white dentin
  • hardest calcified tissue in the human body but it is brittle
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4
Q

Color of enamel comes from
the color of ____

A

Dentin

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5
Q

Hardest calcified tissue in the human body but it is brittle

A

Enamel

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6
Q

Translucent

A

Enamel

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7
Q

Permeable

A

Enamel

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8
Q

Yellowish white to grayish white dentin

A

Enamel

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9
Q

Extends from DEJ to the external surface of the tooth

A

Enamel rods/prisms

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10
Q

Oriented at right angles perpendicular to the DEJ and tooth surface

A

Enamel rods/prisms

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11
Q

Under pits and fissure, ____ will converge towards each other, towards the bottom of the pits/fissures, on the proximal sides usually have horizontal or a little oblique

A

Enamel rods/prisms

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12
Q

Consist of head and tail

A

Enamel rods/prisms

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13
Q

Made up of hydroxyapatite crystals

A

Enamel rods/prisms

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14
Q

Thin leaf like folds between your enamel rod group extending from the enamel surface towards the dej

A

Enamel Lamellae

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15
Q

Containing mostly inorganic material

A

Enamel Lamellae

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16
Q

A weak area that predisposes tooth to entry of bacteria and dental caries

A

Enamel Lamellae

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17
Q

More prone to caries

A

Enamel Lamellae

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18
Q

Composed of bundles of poorly calcified rods originating from the DEJ

A

Enamel Tufts

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18
Q

Narrow, ribbon like structure

A

Enamel Tufts

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19
Q

A lot of ____ at the DEJ, play a role in the spread of dental caries because they are poorly calcified

A

Enamel Tufts

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20
Q

This serve as pain receptors explaining the sensitivity by some patients during tooth preparation

A

Enamel Spindle

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20
Q

Odontoblastic processes that cross the DEJ into enamel

A

Enamel Spindle

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21
Q

This the reason why some patient complain of sensitivity even if you just drill in enamel

A

Enamel Spindle

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22
Q

Changes that enamel will undergo:

A
  • Attrition
  • Abrasion
  • Erosion
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23
Q

physiologic wear of your enamel

A

Attrition

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24
Q

From tooth contact or from grinding

A

Attrition

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25
Q

Affects mainly the biting surfaces of the teeth

A

Attrition

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26
Q

Is the mechanical wear of enamel

A

Abrasion

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27
Q

usually due to aggressive tooth brushing

A

Abrasion

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28
Q

Usually seen in the cervical area

A

Abrasion

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29
Q

Educate patient how to brush properly (soft bristles brush)

A

Abrasion

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30
Q

Chemical wear of your enamel

A

Erosion

31
Q

From an acidic diet or stomach acids; Caused by frequent intake of soft drinks (coke)

A

Erosion

32
Q

Affects every exposed tooth surface

A

Erosion

33
Q

65% inorganic and 35% organic

A

Dentin

34
Q

It gives form and shape of the tooth supporting your enamel

A

Dentin

35
Q

Whatever you do to ____ it will affect your pulp

A

Dentin

36
Q

is a vital tissue

A

Dentin

37
Q

What are the characteristics of Dentin:

A
  • Softer than enamel, harder than bone
  • Made up of dentinal tubules (holes)
  • Light yellowish in color
38
Q

Softer than enamel, harder than bone

A

Dentin

39
Q

Made up of dentinal tubules (holes)

A

Dentin

40
Q

Light yellowish in color

A

Dentin

41
Q

Dentin can form:

A
  • Primary Dentin
  • Secondary Dentin
  • Reparative Dentin/Tertiary Dentin
  • Sclerotic Dentin
  • Eburnated Dentin
42
Q

First laid down dentin until root is finally complete

A

Primary Dentin

43
Q

Continuous to constrict the pulp chamber

A

Secondary Dentin

44
Q

As we grow older the pulp will also constrict in size because of continuous production of ____.

A

Secondary Dentin

45
Q

Is formed when you have carries that are very deep

A

Reparative Dentin/Tertiary Dentin

46
Q

the pulp would try to protect itself by the formation of ____ to make sure that your pulp is not further harmed.

A

Reparative Dentin/Tertiary Dentin

47
Q

Localized to the affected area of the pulp-dentin complex

A

Reparative Dentin/Tertiary Dentin

47
Q

Also called reparative dentin where the barrier protection is superior

A

Tertiary Dentin

48
Q

No continuity regular

A

primary dentin and tertiary dentin

49
Q

Different chemically and structurally from primary and secondary dentin

A

Reparative Dentin/Tertiary Dentin

50
Q

Formed for the pulp to be protected from further injury

A

Reparative Dentin/Tertiary Dentin

51
Q

Nearest to caries, you have to excavate this because it is usually soft and contaminated with bacteria

A

Infected dentin

52
Q

You cannot excavate, resistant

A

Affected dentin

53
Q

Result of aging or mild irritation and causes a change in the composition your primary dentin

A

Sclerotic Dentin

54
Q

peritubular area are wider and
filled with calcified material from the DEJ

A

Sclerotic Dentin

55
Q

Seals your peritubular area so, it blocks bacteria

A

Sclerotic Dentin

56
Q

Refers to the outward or exposed portion of reactive sclerotic dentin

A

Eburnated Dentin

57
Q

Where slow caries have destroyed the overlying tooth structure leaving a darkened cleanable surface

A

Eburnated Dentin

58
Q

45-50% inorganic and 50-55% organic

A

Cementum

59
Q

Serves to attach to the root of the tooth to the alveolar bone by means of the periodontal ligament fiber

A

Cementum

60
Q

Compensates for occlusal wear

A

Cementum

61
Q

Protects root dentin

A

Cementum

62
Q

Repairs resorp part surface, fracture roots

A

Cementum

63
Q

Provides for reattachment of broken
periodontal fibers

A

Cementum

64
Q

if you extend your fill over the margin, it will irritate or infect your gums

TRUE OR FALSE

A

TRUE

65
Q

75% water and 25% organic portion

A

Pulp

66
Q

Supply nutritional elements to dentin, to the odontoblast and its process

A

Pulp

67
Q

Responsible for the continuous production of dentin

A

Pulp

68
Q

Responsible for the continuous production of dentin if your pulp is still ____.

A

Vital

69
Q

Contains a lot of sensory and motor fibers, it is very sensitive to any irritant

A

Pulp

70
Q

Alarm clock if there is something wrong with the tooth

A

Pulp

71
Q

Should drill then pulp

TRUE OR FALSE

A

FALSE

72
Q

Don’t drill without anesthesia

TRUE OR FALSE

A

TRUE

73
Q

What are the root canal treatment:

A
  • Removal of all the pulp contents
  • Clean it
  • Irrigate the tooth and replace it with a root canal material before restoration or crown
  • Serves to preserve the tooth from having it extracted
74
Q

Composed of supportive structures of the teeth

A

Periodontium

75
Q

Give 2 Gingival unit of periodontium:

A

-free and attached gingiva
- alveolar mucosa

76
Q

Give 3 Attachment apparatus of periodontium:

A
  • Cementum
  • Periodontal ligament
  • Alveolar process

CARIOLOGY (8 decks)

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