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Dental Nursing > Tooth Anatomy > Flashcards

Tooth Anatomy Flashcards

0
Q

What is the first stage of tooth formation?

A

GROWTH

Bud -formation of tooth begins
Cap - cells of tooth increases
Bell -different tissues form/shape developed

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1
Q

What is the correct terminology for tooth formation?

A

Odontogenesis

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2
Q

What is the second stage of tooth formation?

A

Calcification

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3
Q

What forms enamel?

A

Ameloblasts

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4
Q

What is the final stage of development?

A

Eruption

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5
Q

What age do deciduous teeth begin to erupt?

A

Approx. 8 months

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6
Q

What age is the eruption of deciduous teeth complete?

A

29 months (2 1/2)

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7
Q

What is bifurcation?

A

When roots divide into two

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8
Q

What is trifurcation

A

When roots split into 3

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9
Q

What is exfoliation?

A

Shedding of the crown leaving room for permanent teeth

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10
Q

What is reabsorption?

A

Roots disintegrate

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11
Q

What is the name of the cells that cause reabsorption?

A

Osteoclasts

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12
Q

How many teeth are in the permanent set?

A

32

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13
Q

How many teeth are in the deciduous set?

A

20

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14
Q

What is the pulp made up of?

A

Nerves and blood vessels

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15
Q

What is enamel made up of?

A

96% mineral crystals arranged as prisms

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16
Q

What are the mineral crystals that make up enamel called?

A

Calcium hydroxyapatite

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17
Q

Where do enamel and dentine meet?

A

At the amelodentinal junction (ADJ)

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18
Q

What is the name of cells that make up dentine?

A

Odontoblasts

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19
Q

What are odontoblasts composed of?

A

Hollow tubes

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20
Q

What are the two types of dentine?

A

Primary

Secondary

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21
Q

What forms cementum?

A

Cementoblasts

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22
Q

Where does cementum meet?

A

Cemento-enamel junction (CEJ)

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23
Q

At what age should have all deciduous teeth erupted?

A

2-3

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24
Q

Which teeth are premolars?

A

4s and 5’s

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25
Q

At what age does exfoliation take place

A

Between 5 and 12 years old

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26
Q

At what age do upper deciduous central incisors erupt?

URA & ULA

A

8-12 months

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27
Q

At what age do upper deciduous lateral incisors erupt?

URB & ULB

A

9-13 months

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28
Q

At what age do upper deciduous canines erupt?

URC & ULC

A

16-22 months

29
Q

At what age do upper deciduous first molars erupt?

URD & ULD

A

13-19 months

30
Q

At what age do the upper deciduous second molars erupt?

URE & ULE

A

23-31 months

31
Q

At what age do the lower deciduous incisors erupt?

LLA & LRA

A

6-19 months

32
Q

At what age do the lower deciduous lateral incisors erupt?

LLB & LRB

A

10 - 16 months

33
Q

At what age do the lower deciduous canines erupt?

LLC & LRC

A

17-23 months

34
Q

At what age do the lower deciduous first molars erupt?

LLD & LRD

A

14-18 months

35
Q

At what age do the lower deciduous second molars erupt?

LLE & LRE

A

25-33 months

36
Q

At what age do the upper central incisors erupt?

A

7-8 years

37
Q

At what age do the upper lateral incisors erupt?

A

8-9 years

38
Q

At what age do the upper canines erupt?

A

11-12 years

39
Q

What age do the upper first pre molars erupt?

4’s

A

10-11 years

40
Q

At what age do the upper second premolars erupt?

5’s

A

10-12 years

41
Q

At what age do the upper first molars erupt?

6’s

A

6-7 years

42
Q

At what age do the upper second molars erupt?

7’s

A

12-13 years

43
Q

At what age do the upper third molars erupt?

Wisdom teeth

A

17-21

44
Q

At what age do the lower central incisors erupt?

A

6-7

45
Q

At what age do the lower lateral incisors erupt?

A

7-8

46
Q

At what age do the lower canines erupt?

A

9-10 years

47
Q

At what age do the lower first premolars erupt?

4’s

A

10-12

48
Q

At what age do the lower second premolars erupt?

5’s

A

11-12

49
Q

At what age do the lower first molars erupt?

6’s

A

6-7

50
Q

At what age do the lower second molars erupt?

7’s

A

11-13

51
Q

At what age do the lower third molars erupt?

Wisdom teeth

A

17-21

52
Q

What is mastication?

A

Chewing

53
Q

Which are the only premolars to have two roots?

A

Upper 4’s

54
Q

How many roots do upper molars have?

A

3

55
Q

How many roots do lower molars have?

A

2

56
Q

How many cusps do premolars have?

A

2

57
Q

How many cusps do upper molars have? *

A

4

58
Q

The cusp of carabelli is located on which tooth?

A

Upper 6’s

59
Q

How many cusps do lower molars have?*

A

4

* lower 6’s have 5

60
Q

What are genetic disturbance factors of dental development?

A

Palatial placement if canines
Down’s syndrome
Jaw/tooth size

61
Q

What are environmental disturbance factors of dental development

A 
Alcohol
Smoking
Herpes
Rubella contraction during pregnancy
Heroin/cocaine
Tetracycline
Radiation
62
Q

What is anodontia?

A

Absence of one or more teeth

63
Q

What is hypodontia?

A

Lack of development of teeth

64
Q

What are supernumerary teeth?

A

Extra teeth

65
Q

What is macrodontia?

A

Abnormally large teeth

66
Q

Why is microdontia?

A

Abnormally small teeth

67
Q

What is synodontia?

A

Fusion if two adjacent teeth

68
Q

What is enamel dysplasia?

A

Faulty development if enamel

69
Q

What are hutchinson incisors?

A

Small and peg shaped

Caused by mother having syphillis

70
Q

What is a Cingulum?

A

A u or w shaped ridge on the palatal/lingual surface

71
Q

What is mamelon?

A

Ridges on the incisal edge

Dental Nursing (22 decks)

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