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Dental Anatomy & Occlusion 101 > Midterm 1 (Theory) > Flashcards

Midterm 1 (Theory) Flashcards

1
Q

What is the mandibular?

A

This refers to the lower jaw or the mandible

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2
Q

What is the maxillary?

A

This refers to the upper jaw or the maxilla

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3
Q

What joint do the maxilla and mandible articulate?

A

The temporomandibular joint ( TMJ )

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4
Q

What are the maxillary teeth?

A

These are the teeth arranged in the upper maxillary arch

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5
Q

What are mandibular teeth?

A

These are teeth arranged in the lower mandibular arch

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6
Q

What are the 4 quadrants in the mouth?

A

I. Maxillary upper right
2. Maxillary upper left
3. Mandibular lower right
4. Mandibular lower left

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7
Q

How many dentitions are present for humans? Name them

A

There are 2 dentitions present for humans; primary & secondary

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8
Q

What is the scientific name for a primary dentition?

A

Deciduous

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9
Q

What is a secondary dentition called?

A

Permanent dentition.

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10
Q

What is the mixed dentition period?

A

This is the transitional phase when both deciduous & permanent teeth are present

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11
Q

What is the time frame for a deciduous dentition?

A

6 months - 6 years

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12
Q

What is the timeframe for a mixed dentition

A

6 years - 12 years

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13
Q

What is the timeframe for a permanent dentition?

A

12 years - 25 years

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14
Q

What is the age timeframe for when a dentition is required for wisdom teeth removal?

A

17 - 25 years

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15
Q

Why are deciduous teeth named “decidious”

A

This is because they shed like the leaves of deciduous trees in autumn

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16
Q

What is the timeframe for when deciduous teeth erupt?

A

6 months - 2 years

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17
Q

What are some other names for decidious teeth?

A

Baby teeth, milk teeth, temporary teeth

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18
Q

What are the 5 deciduous teeth?

A

l. Central incisor
2. Lateral incisor
3. Canine
4. 1st deciduous molar
5. 2nd deciduous molar

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19
Q

How many teeth are there in the oral cavity for a child in the deciduous stage?

A

20 in the oral cavity

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20
Q

Describe how many teeth there are in the upper left quadrant (maxillary) for a deciduous?

A

There are 5 teeth in the upper left quadrant

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21
Q

What are permanent teeth?

A

These are tee teeth of tie second or adult dentition

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22
Q

How many teeth does would an 18 year old girl have?

A

32 permanent teeth in the oral cavity

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23
Q

How many maxillary teeth would would an 18 year old have

A

16 maxillary teeth. The individual would have 16 teeth in the maxillary and mandibular region each

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24
Q

During what time period do permanent teeth erupt?

A

6-21 years of age

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25
Q

How many teeth are there in each quadrant for a 20 year old?

A

8 teeth in each quadrant

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26
Q

How many teeth are there in the maxillary arch of a 20 year old?

A

16

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27
Q

What are succedaneous teeth?

A

These are succeeding deciduous teeth

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28
Q

What teeth do incisors and canines replace?

A

They replace their counter - parts in the deciduous stage. Hence they just transition from deciduous → permanent

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29
Q

Which teeth are considered non- succedaneous?

A

Molars

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30
Q

How many types of succedaneous teeth are there? Name them

A

There are 3 types of succedaneous teeth. A) incisors b) canines C) pre-molars

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31
Q

What teeth do pre-molars replace?

A

They replace deciduous molars

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32
Q

How many dental formulas are there? Which ones?

A

There are 2 types. One for deciduous and one for permanent

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33
Q

What is the deciduous dental formula?

A

I(2/2)+C(1/1)+M(2/2) = 10

Only for I half

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34
Q

What is the permanent dental formula?

A

I(2/2) + C(1/1) + P(2/2) + M (3/3) = 16

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35
Q

Dental formula for rats

A

I(1/1) + C(0/0) + P(0/0) +M(3/3) = 8

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36
Q

What is the importance of the tooth numbering system?

A

They help create short hand systems for recording data and facilitating communication between different dentists.

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37
Q

How many type of tooth notation systems are there?

A

3

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38
Q

Name all the different tooth notation systems

A

Palmer notation systems (symbolic), universal notation system, 2 digit system (fdi)

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39
Q

What tooth notation is most universally used and in the UAE?

A

2 digit system

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40
Q

Who was the palmer notation system founded by?

A

Adolfo Zsigmondy (1861) and Palmer (1970)

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41
Q

In what years year was the Palmer notation system recommended?

A

It was recommended in 1947 by the committee members of the American Dental association

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42
Q

In the palmer notation system what anotation is used by a deciduous dentist?

A

A,B,C,D,E
( the alphabets start from the vertical and horizontal line cross over)

43
Q

What does each alphabet represent in deciduous palmer notation system?

A

A -represents the Central incisor
B- 2nd incisor
C - canine
D- 1st molar
E - 2nd molar

44
Q

How does a permanent dentition annotate the palmer notation system

A

The numbers 1-8 are used

45
Q

How does a permanent dentition annotate the palmer notation system

A

The numbers 1-8 are used

46
Q

What is the problem we face with the Palmer notation system?

A

It is not compatible with technology

47
Q

What is the problem we face with the Palmer notation system?

A

It is not compatible with technology

48
Q

In what year was the universal notation system recommended?

A

1968

49
Q

What numbering system is used bya deciduous dentition when using the universal annotation system?

A

A-T

50
Q

What numbering system is used bya deciduous dentition when using the universal annotation system?

A

A-T

51
Q

What numbering system is used by a permanent dentition using the universal system?

A

1- 32

52
Q

What does the 1st number in the 2 digit system indicate?

A

It indicates which quadrant it is in

53
Q

What does the 2nd digit in the 2 digit system indicate?

A

This indicates the tooth in the quadrant.

54
Q

What numbers are used by a permanent dentition to identify the quadrants?

A

1-4

55
Q

What numbers are used by a Deciduous dentition to identify the quadrants?

A

5 - 8

56
Q

What numbers are used by a Deciduous dentition to identify the quadrants?

A

5 - 8

57
Q

What is micro anatomy of teeth

A

Something you can see with your naked eye

58
Q

Anatomical crown?

A

Is that portion of tooth which is covered by
enamel.

59
Q

Clinical crown?

A

Is the portion of tooth which is visible in mouth.

60
Q

Anatomical root?

A

This is the part of the tooth covered by cementum

61
Q

Function of cervical line

A

To separate the root & crown

62
Q

In what scenario would the clinical crown be larger than the anatomical crown?

A

As the individual grows older the clinical crown can grow longer than the anatomical crown.. Also depends on the level of gingival recession

63
Q

What is the enamel?

A
  1. The hardest tissue
  2. Covers the anatomical crown
  3. Ectoderm in origin
64
Q

What is the dentin?

A

A hard tissue but not harder than enamel.forms the main body of the tooth and surrounds the pulp cavity.it is covered by channel in the anatomical crown and cementum min the anatomical root.

65
Q

Name the micro anatomy of from the hardest to the softest tissue.

A

Enamel → dentin → cementum → bone

66
Q

Name the micro anatomy of from the hardest to the softest tissue.

A

Enamel → dentin → cementum → bone

67
Q

What is the Denton - enamel junction

A

internal line of
meeting of dentin &
enamel in anatomical
crown of a tooth.

68
Q

What is the Denton - enamel junction

A

internal line of
meeting of dentin &
enamel in anatomical
crown of a tooth.

69
Q

What is the dentino-cementum junction?

A

internal
line of meeting of dentin &
cementum in anatomical
root of a tooth

70
Q

What is the dentino-cementum junction?

A

internal
line of meeting of dentin &
cementum in anatomical
root of a tooth

71
Q

What is pulp?

A

living soft tissue which occupies pulp cavity of a
vital tooth & contains tooth’s blood vessels & nerve
supply.

72
Q

What is the pulp canal?

A

portion of pulp cavity which is located in
root of the tooth (also called as root canal)

73
Q

What is the pulp chamber?

A

enlarged portion of pulp cavity which
is found mostly in anatomical crown

74
Q

What is the pulp chamber?

A

enlarged portion of pulp cavity which
is found mostly in anatomical crown

75
Q

What are the pulp horns?

A

usually pointed incisal or occlusal
elongations of pulp chamber which often correspond
to cusps, or lobes of teeth

76
Q

What are the pulp horns?

A

usually pointed incisal or occlusal
elongations of pulp chamber which often correspond
to cusps, or lobes of teeth

77
Q

Is the apical toramen?

A

the end of the pulp canal by which
pulp tissues connect to the periodontal tissues.

78
Q

Is the apical toramen?

A

the end of the pulp canal by which
pulp tissues connect to the periodontal tissues.

79
Q

What is the alveolar process?

A

bone which surrounds
& supports all teeth in
each jaw.

80
Q

What is the alveolus

A

bony socket portion of alveolar process,
into which an erupted tooth is
set.

81
Q

What is the alveolus

A

bony socket portion of alveolar process,
into which an erupted tooth is
set.

82
Q

What is the crypt?

A

portion of the
alveolar process
into which an
unerupted tooth is
set.

83
Q

What is the periodontal ligament?

A

fibrous
attachment of tooth cementum to the
alveolar bone

84
Q

What is the periodontal apparatus

A

is a system which
responsible for holding a tooth in its bony
socket.

85
Q

What is the periodontal apparatus.composed of?

A

a- Periodontal ligaments
b- Alveolar bone
c- Cementum and;
d- Gingiva

86
Q

How many tooth surfaces are there?

A

5

87
Q

What are the anterior teeth?

A

Central incisor,lateral incisor,canine

88
Q

What are the posterior teeth

A

Pre molars & molars

89
Q

What are the 5 surfaces for an anterior tooth?

A

Labial, lingual, medial, distal, incisal

90
Q

What are the 5 surfaces for a posterior tooth?

A

Buccal, lingual, mesial,distal, occlusal

91
Q

Facial surfaces refer to which surfaces?

A

Labial & buccal

92
Q

Which surfaces referto posterior surfaces?

A

Mescal & distal

93
Q

How many directions can you divide the teeth in?

A

3

94
Q

What are the 3 different tooth divisions?

A

Incisocervical,mesiodistal, labiolingual/buccolingual

95
Q

How many one angles do anterior teeth have?

A

6

96
Q

What are the line angles in anterior teeth

A

Mesiolabia, mesiolingual,distolabia, distolingual, labioincisal, linguincisal

97
Q

How many one angles do posterior teeth have? Why?

A

8, because they are wider

98
Q

What are the one angles for a posterior tooth?

A

Buccocclusal, linguocclusal, mesidlingual, mesiobuccal, mesiocclusal, distolingual, distobuccal, distocclusal

99
Q

How many point angles do teeth have?

A

4

100
Q

What are the point angles on an anterior tooth?

A

Mesiolabioincisal,mesiolinguoincisal, distolabio incisal, distolinguoincisal

101
Q

What are the point angles on a posterior tooth?

A

Mesiobuccocclusal,mesiolinginocclusal, distobuccocclusal, distolinguocclusal

102
Q

What are line angles?

A

lines formed by the junction
of two surfaces derived its
name from the combination
of the surfaces that form it

103
Q

What are point angles?

A

points formed by the junction
of three surfaces derived its
name from the combination of
the surfaces that form it

Dental Anatomy & Occlusion 101 (1 decks)

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