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Radiology > Maxillary Intraoral Anatomy > Flashcards

Maxillary Intraoral Anatomy Flashcards

1
Q

The radiographic recognition of
disease, requires a sound knowledge of the ___________ appearance of normal structures

A

radiographic

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2
Q

What is the lamina dura?

A

The teeth sockets are bounded by a thin radiopaque layer of dense bone

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3
Q

The teeth sockets are bounded by a thin radiopaque layer of dense bone called…

A

lamina dura

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4
Q

Why does the lamina dura look more radiopaque?

A

tooth is constantly pulling on it (causing stimulus)

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5
Q

What are the parts of the tooth?

A
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6
Q
A

lamina dura

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7
Q
A

lamina dura

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8
Q

What is the PDL space?

A

space between the root of the tooth and the lamina dura

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9
Q

What is the part of bone that is attached to the cementum by fibers?

A

lamina dura

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10
Q

What is the lamina dura continuous with?

A

alveolar crest

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11
Q

List the parts of the tooth from the most radiopaque to least?

A

enamel, dentin, pulp

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12
Q

What is the alveolar crest?

A

Is the gingival margin of the alveolar
process between teeth (radiopaque line)

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13
Q

What is the gingival margin of the alveolar process between teeth?

A

alveolar crest

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14
Q
A

alveolar crest

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15
Q

The alveolar crests (arrows) are seen as _______ borders of the alveolar bone

A

cortical

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16
Q

What do we want to see on the radiograph?

A

1-2 millimeters between alveolar crest and CEJ is healthy

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17
Q
A

alveolar crest

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18
Q

What is the periodontal ligament space?

A

It appears as a radiolucent space between the tooth root and the lamina dura.

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19
Q

What appears as a radiolucent space between the tooth root and the lamina dura?

A

periodontal ligament space

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20
Q
A

periodontal ligament space

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21
Q
A

periodontal ligament space

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22
Q
A

double periodontal ligament space

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23
Q

Why can you see a double PDL space sometimes?

A

A double periodontal ligament space and lamina dura may be seen when there is a convexity of the proximal surface of the root resulting in two heights of contour

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24
Q

What is another name for cancellous bone?

A

trabecular bone

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25
Q

The __________ bone lies between the cortical plates in both jaws

A

cancellous

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26
Q

Inside the trabeculation there is a ___________ space

A

medullary (for blood vessels, nerves, etc.)

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27
Q
A

marrow spaces (medullary space)

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28
Q
A

trabecular plates

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29
Q

What bone usually at or just below the junction of the inferior end of the nasal septum and the inferior outline of the nasal aperture

A

Anterior Nasal Spine

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30
Q

Where is the anterior nasal spine?

A

It is usually at or just below the junction of the inferior end of the nasal septum and the inferior outline of the nasal aperture.

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31
Q
A

anterior nasal spine

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32
Q
A

anterior nasal spine

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33
Q

What is in red?

A

septum

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34
Q

What is in yellow?

A

floor of the nasal cavity

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35
Q

What is in green?

A

anterior nasal spine

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36
Q
A

anterior nasal spine

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37
Q
A

anterior nasal spine

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38
Q
A

anterior nasal spine

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39
Q

What is the intermaxillary suture?

A

Extends from alveolar crest between #8 and #9 posteriorly to distal aspect of hard palate

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40
Q

What extends from alveolar crest between #8 and #9 posteriorly to distal aspect of hard palate?

A

intermaxillary suture

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41
Q

What is another name for the intermaxillary suture?

A

median suture

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42
Q

Is the intermaxillary suture radiolucent or radiopaque?

A

radiolucent

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43
Q
A

intermaxillary suture

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44
Q
A

intermaxillary suture

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45
Q
A

intermaxillary suture

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46
Q
A

intermaxillary suture

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47
Q
A

intermaxillary suture

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48
Q
A

intermaxillary suture

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49
Q

What is the nasopalatine canal?

A

▪ Transmits nasopalatine nerves and vessels
▪ Terminates in incisive foramen

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50
Q
A

Nasopalatine canal

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51
Q

What is the entrance foramine for the nasopalatine canal?

A

two usually round or oval foramina in the floor of the nasal cavity

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52
Q
A

superior foramina of the nasopalatine canal

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53
Q
A

nasopalatine canal

54
Q
A

nasopalatine canal

55
Q
A

superior foramina of the nasopalatine canal

56
Q
A

nasopalatine canal

57
Q
A

nasopalatine canal

58
Q

What are the green arrows?

A

nasopalatine canal

59
Q
A

nasopalatine canal

60
Q

What is the green?

A

nasopalatine canal

61
Q

What is the yellow?

A

incisive foramen

62
Q

What is the incisive foramen?

A

the oral end of the nasopalatine canal

63
Q
A

incisive foramen

64
Q
A

incisive foramen

65
Q

The incisive foramen appears as an ovoid _____________ between the roots of the central incisors

A

radiolucency

66
Q
A

incisive foramen

67
Q
A

incisive foramen

68
Q
A

incisive foramen

69
Q

What is the nasal cavity?

A

▪ Is located above the oral cavity
▪Its floor is seen as a thin radiopaque line

70
Q
A

nasal cavity

71
Q
A

floor of the nasal cavity

72
Q

What is blue?

A

inverted y (switch from nasal cavity to maxillary sinus)

73
Q

What is yellow?

A

maxillary sinus

74
Q

What is white arrows?

A

floor of the nasal cavity

75
Q
A

floor of the nasal cavity

76
Q
A

floor of the nasal cavity

77
Q
A

floor of maxillary sinus

78
Q

How can you tell the difference between floor maxillary sinus and floor of nasal cavity?

A

*nasal cavity - straight line (by premolars)
*maxillary sinus - wavey line (by molars)

79
Q

What is yellow?

A

inverted y

80
Q

What is light blue?

A

floor of maxillary sinus

81
Q

What is dark blue/navy?

A

floor of nasal cavity

82
Q
A

inferior nasal cocha/turbinate

83
Q

Green arrows

A

inferior concha

84
Q
A

nasal septum

85
Q

What is the maxillary sinus?

A

▪ Is an air-containing cavity lined with mucous membrane.
▪ The borders appear in periapical radiographs as a thin and radiopaque line.

86
Q
A

maxillary sinus

87
Q

What is red?

A

floor of the nasal cavity

88
Q
A

maxillary sinus floor

89
Q

The inferior border of the _________ ______ appears as a thin radiopaque line near the apices of the maxillary premolars and molars.

A

maxillary sinus

90
Q
A

maxillary sinus

91
Q
A

maxillary sinus

92
Q

The floor of the maxillary sinus (arrows) often extends toward the crest of the alveolar ridge in response to…

A

missing teeth

93
Q
A

septum in the maxillary sinus

94
Q
A

neurovascular canals in the wall of the maxillary sinus

95
Q

What is the inverted y?

A

Formed by nasal fossa and maxillary sinus

96
Q
A

inverted y

97
Q

What is the soft tissue of the tip of the nose can be seen in projections of the maxillary incisors, superimposed over the roots?

100
Q
101
Q
102
Q

What is the lateral fossa?

A

A depression in the maxilla near the apex of the lateral incisor.

103
Q
A

lateral fossa

104
Q
A

lateral fossa

105
Q

The lateral fossa is a diffuse radiolucency in the region of the…

A

lateral incisor

106
Q
A

lateral fossa

107
Q
A

lateral fossa

108
Q

What is the nasolacrimal canal?

A

Runs from the orbit inferiorly to the nasal cavity.

109
Q
A

nasolacrimal canal

110
Q
A

nasolacrimal canal

111
Q

The nasolacrimal canals are commonly seen as ovoid _____________ on maxillary occlusal projections.

A

radiolucencies

112
Q

Nasolacrimal canal is occasionally seen near the apex of the _________
when steep vertical angulation is used

113
Q

What is the zygomatic process of the maxilla?

A

The zygomatic process of the maxilla is an extension of the lateral maxillary surface that articulates with the maxillary process of the zygoma.

114
Q
A

ZYGOMATIC PROCESS OF THE MAXILLA

115
Q
A

zygomatic process of the maxilla

116
Q
A

zygomatic process of the maxilla

117
Q

White arrows

A

zygomatic process of maxilla

118
Q

Blue line

A

floor of maxillary sinus

119
Q

Red line

A

tuberosity

120
Q

Yellow line

A

floor of the nasal cavity

121
Q
122
Q

What is the nasolabial fold?

A

Radiographically is an oblique line demarcating a region that appears to be covered by a veil of slight radiopacity

123
Q
A

nasolabial fold

124
Q
A

nasolabial fold

125
Q

The nasolabial soft tissue fold extends across the __________ region.

A

canine-premolar

126
Q
A

tuberosity

127
Q
A

tuberosity

128
Q

What are the pterygoid plates and hamular notch?

A

The medial and lateral pterygoid plates lie immediately posterior to the tuberosity of the maxilla.

129
Q
A

hamular notch/process

130
Q
A

hamular notch

131
Q
A

pterygoid plates

132
Q
A

hamular process

Radiology (25 decks)

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