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Radiology > Mandibular Intraoral Anatomy > Flashcards

Mandibular Intraoral Anatomy Flashcards

1
Q

Which is the entrance and exit for the IA?

A

mandibular foramen - entrance
mental foramen - exit

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2
Q
A

mylohyoid ridge (aka internal oblique ridge)

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3
Q
A

inferior alveolar canal

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4
Q

What is the symphysis?

A

In Infants it is a radiolucent line through the midline of the jaw between the images of the forming deciduous central incisors.

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5
Q

What is the radiolucent line through the midline of the jaw between the images of the forming deciduous central incisors in infants?

A

symphysis

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6
Q
A

symphysis

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7
Q
A

mandibular symphysis

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8
Q

What are the genial tubercles?

A

They are bony protuberances located on the lingual surface of the mandible slightly above the inferior border and in the midline.

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9
Q
A

genial tubercles

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10
Q

What are the bony protuberances located on the lingual surface of the mandible slightly above the inferior border and in the midline?

A

genial tubercles

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11
Q
A

genial tubercles

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12
Q
A

genial tubercles

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13
Q
A

genial tubercles

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14
Q
A

genial tubercles

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15
Q
A

genial tubercles

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16
Q

What is the lingual foramen?

A

A foramen on the lingual surface of the midline of the mandible in the region of the genial tubercles.

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17
Q

What is the foramen on the lingual surface of the midline of the mandible in the region of the genial tubercles?

A

lingual foramen

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18
Q

What usually goes through the lingual foramen?

A

sublingual artery

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19
Q
A

lingual foramen

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20
Q
A

lingual foramen

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21
Q
A

lingual foramen

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22
Q
A

lingual foramen

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23
Q

What is the mental ridge?

A

On periapical radiographs of the mandibular central incisors, the mental ridge may occasionally be seen as two radiopaque lines sweeping bilaterally forward and upward toward the midline.

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24
Q
A

mental ridge

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25
Q
A

mental ridge

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26
Q
A

mental ridge

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27
Q
A

mental ridge

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28
Q

What are mental fossa?

A

The mental fossa is a depression on the labial aspect of the mandible extending laterally from the midline and above the mental ridge.

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29
Q
A

mental fossa

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30
Q

The mental fossa is a depression on the anterior surface of the mandible and is seen as a __________ area with ____-defined borders (arrows) in the region of the incisor roots.

A

radiolucent
ill-defined

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31
Q
A

mental fossa

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32
Q
A

mental fossa

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33
Q

What is the mental foramen?

A

The mental foramen is usually the anterior limit of the inferior dental canal.

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34
Q
A

mental foramen

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35
Q
A

mental foramen

36
Q
A

mental foramen

37
Q
A

mental foramen

38
Q
A

mental foramen

39
Q
A

mental foramen

40
Q
A

mental foramen

41
Q

What is the mandibular canal?

A

The radiographic image of the mandibular canal is a dark linear shadow with thin radiopaque superior and inferior borders.

42
Q
A

mandibular canal

43
Q
A

mandibular canal

44
Q
A

mandibular canal

45
Q
A

mandibular canal

46
Q
A

mandibular canal

47
Q
A

mandibular canal

48
Q
A

mandibular canal

49
Q

What are nutrient canals?

A

Nutrient canals carry a neurovascular bundle and appear as radiolucent lines of fairly uniform width.

50
Q
A

nutrient canals

51
Q
A

nutrient canals

52
Q

Nutrient canals seen as vertical __________ structures

A

radiolucent

53
Q
A

nutrient canals

54
Q
A

nutrient canals

55
Q

What is the internal oblique ridge?

A

▪ The mylohyoid ridge is a slightly irregular crest of bone on the lingual surface of the mandibular body.
▪ Also called mylohyoid ridge

56
Q
A

internal oblique ridge
(or mylohyoid rigde)

57
Q
A

mylohyoid ridge
(or internal oblique ridge)

58
Q
A

mylohyoid ridge
(or internal oblique ridge)

59
Q

Mylohyoid ridge (arrows) running at the level of the _____ apices and above the mandibular canal.

60
Q
A

external oblique ridge

61
Q
A

internal oblique ridge
- mylohyoid ridge

62
Q
A

external oblique ridge

63
Q

What is the submandibular gland fossa?

A

Is a depression of the bone on the lingual surface of the mandibular body, immediately below the internal oblique ridge in the molar area.

64
Q
A

submandibular gland fossa

65
Q

Submandibular gland fossa (arrows), indicated by a radiolucent region with ill-defined borders and sparse trabecular bone lying inferiorly to the…

A

mandibular molars

66
Q
A

submandibular gland fossa

67
Q

What is the external oblique ridge?

A

Is a continuation of the anterior border of the mandibular ramus.

68
Q
A

external oblique ridge

69
Q

External oblique ridge (arrows) on the buccal surface of the mandible, seen as a radiopaque line near the alveolar crest in the ____________________ region

A

mandibular third molar

70
Q
A

external oblique ridge

71
Q
A

external oblique ridge

72
Q
A

external oblique ridge

73
Q
A

external oblique ridge

74
Q

What is the inferior border of the mandible?

A

Occasionally, the inferior mandibular border is seen on periapical projections as a characteristically dense, broad radiopaque band of bone.

75
Q
A

inferior border of the mandible

76
Q

The inferior border of the mandible (arrows) is seen as a dense, broad __________ band

A

radiopaque

77
Q
A

inferior border of the mandible

78
Q
A

inferior border of the mandible

79
Q
A

inferior border of the mandible

80
Q

What is the coronoid process?

A

The image of the coronoid process is triangular radiopacity, with its apex directed superiorly and anteriorly, superimposed on the region of the third molar.

81
Q
A

coronoid process of the mandible

82
Q

Coronoid process of the mandible is often superimposed on the…

A

maxillary tuberosity

83
Q
A

coronoid process

84
Q

What are mandibular tori?

A

▪ Bony outgrowths on the lingual surface of the mandible
▪Often bilateral and symmetrical

85
Q
A

mandibular tori

86
Q
A

mandibular tori

87
Q
A

mandibular tori

Radiology (25 decks)

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