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ROENT > LECTURE 17: RADIOGRAPHIC INTERPRETATION: PERIAPICAL > Flashcards

LECTURE 17: RADIOGRAPHIC INTERPRETATION: PERIAPICAL Flashcards

1
Q

→ for objects of low density
→ air, soft tissue

A

DARK GRAY TO BLACK

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2
Q

for objects of high density

A

WHITE TO LIGHT GRAY

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3
Q

radiolucent

larger in children than in adults

size and shape vary with each tooth

A

Pulp Root/Canal

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4
Q

radiopaque

comprises most of the tooth structure

not as radiopaque as enamel

A

Dentin

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5
Q

outermost radiopaque layer of the crown of a tooth

A

Enamel

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6
Q

dense radiopaque line surrounding the root of a tooth

A

Lamina Dura

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7
Q

also known as nasopalatine foramen

→ located at the midline of the anterior portion of the hard palate directly posterior to the maxillary central incisors

A

Incisive Foramen

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8
Q

small ovoid or round radiolucent area located between the roots of the maxillary central incisors

A

Incisive Foramen

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9
Q

the nasopalatine nerve exits the maxilla through this foramen

A

Incisive Foramen

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10
Q

immovable joint between the two palatine processes of the maxilla

A

Median Palatine Suture

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11
Q

extends from the alveolar bone between the maxillary central incisors to the posterior hard palate

A

Median Palatine Suture

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12
Q

thin radiolucent line between the maxillary central incisors

bounded on both sides by dense cortical bone that appears radiopaque

A

Median Palatine Suture

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13
Q

T/f

Median Palatine Suture may become less distinct radiographically as it fuses with age

A

T

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14
Q

pear-shaped compartment of bone located superior to the maxilla

A

Nasal Cavity

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15
Q

its floor is formed by the palatal processes of the maxilla and horizontal portions of the palatine bones

A

Nasal Cavity

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16
Q

its lateral walls are formed by the ethmoid bone and maxillae

A

Nasal Cavity

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17
Q

large radiolucent area above the maxill incisors

A

Nasal Cavity

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18
Q

vertical bony wall or partition that divides the nasal cavity into the right and left fossae

A

Nasal Septum

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19
Q

Nasal Septum

formed by two bones:
o vomer
o portion of ethmoid bone
o cartilage

A

o vomer
o portion of ethmoid bone
o cartilage

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20
Q

vertical radiopaque partition that divides nasal cavity

may be superimposed over the median palatal suture

A

Nasal Septum

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21
Q

Bony wall formed by the palatal processes of the maxilla and horizontal portion of palatine bones

A

Floor of the Nasal Cavity

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22
Q

T/f
Floor of the Nasal Cavity composed of dense cortical bone and defines the inferior bo-rder of the nasal cavity

A

T

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23
Q

two small round radiolucencies located superior to the apices of the maxillary central incisors

A

Superior Foramina of the Incisive Canal

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24
Q

sharp projection of the maxilla located at the anterior and inferior portion of the nasal cavity

A

Anterior Nasal Spine

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25
Q

V-shaped radiopaque area located at the intersection of the floor of the nasal cavity and nasal septum

A

Anterior Nasal Spine

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26
Q

two tiny openings or holes
→ located at the floor of the nasal cavity

A

Superior Foramina of the Incisive Canal

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27
Q

→ extend downward and medially from the floor
of the nasal cavity
→ join together to form the incisive canal and
share a common exit, the incisive foramen
→ nasopalatine nerve enters through here

A

Superior Foramina of the Incisive Canal

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28
Q

→ join together to form the incisive canal and
share a common exit, the incisive foramen
→ nasopalatine nerve enters through here

A

Superior Foramina of the Incisive Canal

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29
Q

two small round radiolucencies located superior to the apices of the maxillary central incisors

A

Superior Foramina of the Incisive Canal

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30
Q

sharp projection of the maxilla located at the anterior and inferior portion of the nasal cavity

A

Anterior Nasal Spine

31
Q

V-shaped radiopaque area located at the intersection of the floor of the nasal cavity and nasal septum

A

Anterior Nasal Spine

32
Q

Wafer-thin, curved plates of bone than extend from the lateral walls of the nasal cavity
seen in the lower lateral portions of the nasal
cavity

A

Inferior Nasal Conchae

33
Q

Wafer-thin, curved plates of bone than extend from the lateral walls of the nasal cavity
seen in the lower lateral portions of the nasal
cavity

A

Inferior Nasal Conchae

34
Q

smooth, depressed area of the maxilla

located inferior and medial to infraorbital foramen between the canine and lateral
incisors

A

Lateral Fossa

35
Q

T/f

Lateral Fossa is a radiolucent area between the maxillary canine and lateral incisors,
may appear as distinct radiolucency or absent varies depending on anatomy of individual

A

T

36
Q

refers to the intersection of the maxillary sinus and the nasal cavity as viewed on a dental radiograph

A

Inverted Y or Antral Y

37
Q

T/f

Inverted Y or Antral Y is located above the maxillary canine

A

T

38
Q

paired cavities or compartments of bone located within the maxilla
→ located above the maxillary premolar and nmolars

A

Maxillary Sinus

39
Q

→ size of a small pea at birth and expands with
growth until it eventually occupies a large portion of the maxilla

A

Maxillary Sinus

40
Q

its floor is composed of dense cortical bone that appears as a radiopaque line

A

Maxillary Sinus

41
Q

Rounded prominence of bone that extends posterior to the third molar region, blood vessels and nerves enter the maxilla in this region and supply the posterior teeth

A

Maxillary Tuberosity

42
Q

radiopaque bulge distal to the third molar region

A

Maxillary Tuberosity

43
Q

bony walls or partitions that appear to divide the maxillary sinus into compartments

A

Septa Within the Maxillary Sinus

44
Q

radiopaque lines within the maxillary sinus

may either be distinct or absent

A

Septa Within the Maxillary Sinus

45
Q

also known as the hamular process

small hook-like projection of bone extending
from medial pterygoid plate of the sphenoid bone

A

Hamulus

46
Q

bony projection of maxilla articulating with → zygoma or malar (cheek) bone

A

Zygomatic Process of Maxilla

47
Q

J- or U-shaped radiopacity located superio the maxillary first molar region

A

Zygomatic Process of Maxilla

48
Q

articulates with the zygomatic process of the maxilla

A

Zygoma/Cheekbone/Malar Bone

49
Q

diffuse, radiopaque band extending posteriorly from the zygomatic process of the maxilla

A

Zygoma/Cheekbone/Malar Bone

50
Q

tiny, tubelike passageways through bone that → contain blood vessels and nerves that supply the maxillary teeth and interdental areas

A

Nutrient Canal for PSAN

51
Q

narrow radiolucent band bounded by two radiopaque lines that represent the cort bone that comprises the walls of the canal

A

Nutrient Canal for PSAN

52
Q

extension of the lateral maxillary surface that arises in the region of the apices of the first
and second molars

A

Zygomatic Process

53
Q

U-shaped radiopaque line with its open end directed superiorly
enclosed rounded end is in the apical region of the first and second molars

A

Zygomatic Process

54
Q

lie posterior to the tuberosity of the maxilla

A

Lateral Pterygoid Plates

55
Q

radiopaque homogeneous shadow without evidence of trabeculation

A

Lateral Pterygoid Plates

56
Q

dense, broad, radiopaque band of bone

A

Lower Border of the Mandible

57
Q

tiny bumps of bone that serve as attachment sites for the genioglossus and geniohyoid
muscles, located on lingual aspect of the mandible

A

Genial Tubercles (Mental Spine)

58
Q

ring-shaped radiopacity below the apices of the mandibular incisors

A

Genial Tubercles (Mental Spine)

59
Q

tiny opening or hole in bone located on internal surface of mandible
→ located near midline and surrounded by the genial tubercles

A

Lingual Foramen

60
Q

small radiolucent dot located inferior to apices of the mandibular incisors

A

Lingual Foramen

61
Q

linear prominence of bone located on internal surface of the mandible
→ extends from molar region downward and forward toward the lower border of the mandibular symphysis
→ serves as an attachment site for the mylohyoid muscle

A

Internal Oblique Ridge

62
Q

linear prominence of bone located on the external surface of the body of the mandible

A

External Oblique Ridge

63
Q

radiopaque band extending downward and forward from the anterior border of the ramus of the mandible

typically ends in the mandibular third molar region

A

External Oblique Ridge

64
Q

linear prominence of cortical bone located on external surface of anterior portion of mandible

→ extends from premolar region to midline and slopes slightly upward

A

Mental Ridge

65
Q

thick radiopaque band that extends from premolar region ot incisor region

often superimposed over mandibular ante teeth

A

Mental Ridge

66
Q

scooped-out depressed area of bone located on external surface of anterior mandible

located above the mental ridge

A

Mental Fossa

67
Q

opening or hole in bone on external surface of mandible in the region of the mandibular premolars

blood vessels and nerves supplying lower lip → exit here

A

Mental Foramen

68
Q

small ovoid or round radiolucent area located in the apical region of the mandibular premolars

frequently misdiagnosed as a periapical lesion

A

Mental Foramen

69
Q

scooped-out, depressed area of bone located on the internal surface of the mandible inferior
to the mylohyoid ridge

A

Submandibular Fossa

70
Q

radiolucent area in the molar region below mylohyoid ridge

A

Submandibular Fossa

71
Q

tube-like passageway through bone that travels the length of the mandible

→ extends from mandibular foramen to mental foramen and houses the IAN and blood vessels

A

Mandibular Canal

72
Q

radiolucent band

outlined by two thin radiopaque lines that represent the cortical walls of the canal

A

Mandibular Canal

73
Q

marked prominence of bone on the anterior ramus of the mandible

→ serves as an attachment site for one of the muscles of mastication

A

Coronoid Process

74
Q

appears on maxillary molar periapical film

triangular radiopacity superimposed over, or inferior to the maxillary tuberosity region

A

Coronoid Process

ROENT (13 decks)

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