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CARIOLOGY > Lecture 3 (Dental Histology) > Flashcards

Lecture 3 (Dental Histology) Flashcards

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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
physiologic wear of your enamel
Attrition
24
From tooth contact or from grinding
Attrition
25
Affects mainly the biting surfaces of the teeth
Attrition
26
Is the mechanical wear of enamel
Abrasion
27
usually due to aggressive tooth brushing
Abrasion
28
Usually seen in the cervical area
Abrasion
29
Educate patient how to brush properly (soft bristles brush)
Abrasion
30
Chemical wear of your enamel
Erosion
31
From an acidic diet or stomach acids; Caused by frequent intake of soft drinks (coke)
Erosion
32
Affects every exposed tooth surface
Erosion
33
65% inorganic and 35% organic
Dentin
34
It gives form and shape of the tooth supporting your enamel
Dentin
35
Whatever you do to ____ it will affect your pulp
Dentin
36
is a vital tissue
Dentin
37
What are the characteristics of Dentin:
- Softer than enamel, harder than bone - Made up of dentinal tubules (holes) - Light yellowish in color
38
Softer than enamel, harder than bone
Dentin
39
Made up of dentinal tubules (holes)
Dentin
40
Light yellowish in color
Dentin
41
Dentin can form:
- Primary Dentin - Secondary Dentin - Reparative Dentin/Tertiary Dentin - Sclerotic Dentin - Eburnated Dentin
42
First laid down dentin until root is finally complete
Primary Dentin
43
Continuous to constrict the pulp chamber
Secondary Dentin
44
As we grow older the pulp will also constrict in size because of continuous production of ____.
Secondary Dentin
45
Is formed when you have carries that are very deep
Reparative Dentin/Tertiary Dentin
46
the pulp would try to protect itself by the formation of ____ to make sure that your pulp is not further harmed.
Reparative Dentin/Tertiary Dentin
47
Localized to the affected area of the pulp-dentin complex
Reparative Dentin/Tertiary Dentin
47
Also called reparative dentin where the barrier protection is superior
Tertiary Dentin
48
No continuity regular
primary dentin and tertiary dentin
49
Different chemically and structurally from primary and secondary dentin
Reparative Dentin/Tertiary Dentin
50
Formed for the pulp to be protected from further injury
Reparative Dentin/Tertiary Dentin
51
Nearest to caries, you have to excavate this because it is usually soft and contaminated with bacteria
Infected dentin
52
You cannot excavate, resistant
Affected dentin
53
Result of aging or mild irritation and causes a change in the composition your primary dentin
Sclerotic Dentin
54
peritubular area are wider and filled with calcified material from the DEJ
Sclerotic Dentin
55
Seals your peritubular area so, it blocks bacteria
Sclerotic Dentin
56
Refers to the outward or exposed portion of reactive sclerotic dentin
Eburnated Dentin
57
Where slow caries have destroyed the overlying tooth structure leaving a darkened cleanable surface
Eburnated Dentin
58
45-50% inorganic and 50-55% organic
Cementum
59
Serves to attach to the root of the tooth to the alveolar bone by means of the periodontal ligament fiber
Cementum
60
Compensates for occlusal wear
Cementum
61
Protects root dentin
Cementum
62
Repairs resorp part surface, fracture roots
Cementum
63
Provides for reattachment of broken periodontal fibers
Cementum
64
if you extend your fill over the margin, it will irritate or infect your gums TRUE OR FALSE
TRUE
65
75% water and 25% organic portion
Pulp
66
Supply nutritional elements to dentin, to the odontoblast and its process
Pulp
67
Responsible for the continuous production of dentin
Pulp
68
Responsible for the continuous production of dentin if your pulp is still ____.
Vital
69
Contains a lot of sensory and motor fibers, it is very sensitive to any irritant
Pulp
70
Alarm clock if there is something wrong with the tooth
Pulp
71
Should drill then pulp TRUE OR FALSE
FALSE
72
Don't drill without anesthesia TRUE OR FALSE
TRUE
73
What are the root canal treatment:
- 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
Composed of supportive structures of the teeth
Periodontium
75
Give 2 Gingival unit of periodontium:
-free and attached gingiva - alveolar mucosa
76
Give 3 Attachment apparatus of periodontium:
- Cementum - Periodontal ligament - Alveolar process

CARIOLOGY (8 decks)

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