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Clinical > Radiographs > Flashcards

Radiographs Flashcards

1
Q

what are radiographs

A

images creating using x ray photons

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2
Q

which molecules are used to produce radiographs

A

x ray photons

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3
Q

what do the x ray photons interact with after passing through an object

A

receptors

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4
Q

what does it mean if radiation is transmitted

A

it passes through the object unaltered

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5
Q

what does it mean if radiation is absorbed

A

it is stopped by tissue

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6
Q

what does it mean if radiation is scattered

A

it changes direction

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7
Q

which interactions of x rays with objects contributes to the attenuation of x ray photos

A

absorption and scattering

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8
Q

what are the three main x ray interactions with matter

A

transmission
absorption
scattering

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9
Q

label the three lines in correspondence to how x rays interact with objects

A

green - transmission
red - absorption
yellow - scatteringq

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10
Q

what does a radiographic image represent

A

the pattern of attenuation of the x ray photons after they have passed through the matter

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11
Q

what is meant by attenuation

A

reduction of force or amplitude of radiation

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12
Q

what do the shades of gray on radiagraphic images correspond to

A

the types of tissue that the x rays pass through

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13
Q

what does radiolucent mean

A

darker areas on an image
less attenuation of the x rays

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14
Q

what does radiopaque mean

A

these are the lighter areas on the image and means there is more attenuation of the x rays

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15
Q

what means the photons did if there are light areas in the radiographs

A

that there is more attenuation

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16
Q

what is the main reason for using radiographs

A

to show the anatomy and pathology that is not visible to the naked eye

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17
Q

what types of tissue are mostly related to the use of radiographs

A

hard tissues that are mineralised

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18
Q

what is the main cause of using radiographs in dentistry

A

caries

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19
Q

how does caries appear on radiographs

A

it results in less radiodensity which leads to the appearance of radiolucence compared to the rest of the tooth

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20
Q

what is a bitewing radiograph used for

A

intraoral

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21
Q

what is a periapical radiograph used for

A

intraoral

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22
Q

what is an occlusal radiograph used for

A

intraoral

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23
Q

what is a panoramic radiograph used for

A

extra oral

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24
Q

what is a lateral cephalogram used for

A

extraoral

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25
Q

what is a cone beam computed tomograph used for

A

cross sectional

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26
Q
A

bitewing radiograph

27
Q
A

periapical radiograph

28
Q
A

occlusal radiograph

29
Q
A

panoramic radiograph

30
Q
A

lateral cephalogram

31
Q
A

cone beam computed through for a cross sectional radiograph

32
Q

what is a bitewing radiograph used for

A

providing a view of multiple side teeth (premolars and molars)

33
Q

what does a bitewing radiograph show

A

crowns
parts of roots
some interdental bone

34
Q

which factors can affect how many bitewing radiographs are taken per side of the mouth

A

reason for the radiograph
number of teeth present
reducing overlap between adjacent teeth

35
Q

what is a periapical radiograph used for

A

providing a full length view of a particular tooth

36
Q

what is shown in a periapical radiograph

A

crown
entire root of the tooth
entire height of bone support around the tooth

37
Q

how do the sizes of the periapical radiographs differ

A

between the anterior and posterior teeth

38
Q

how many dental arches imaged in bitewing radiographs

A

two

39
Q

how many dental arches imaged in periapical radiographs

A

one

40
Q

what is panoramic radiography used for

A

zoomed out view of the jaws

41
Q

what can be shown in panoramic radiography

A

entire dentition as well as jaws and mid face

42
Q

how can panoramic radiographs be described

A

full or sectional

43
Q

is the resolution on extraoral radiographs better or worse than intra oral radiographs

A

worse

44
Q

what are occlusal radiographs used for

A

providing a view of one dental arch - either maxillary or mandibular

45
Q

what are the angles that can be used for occlusal radiographs

A

anterior
lateral
true
oblique

46
Q

what is the main use of occlusal radiographs

A

allowing teeth to be seen from different viewpoints

47
Q

what are cone bean computed tomographs used for

A

providing a cross sectional imaging of the teeth and jaws

48
Q

when are cone beam computed tomographs used for

A

when routine dental imagine cannot provide the required information

49
Q

what is the most expensive radiograph

A

cone beam computed tomographs

50
Q

is the radiation dose of a cone beam computed tomograph higher or lower than the other radiograph types

A

higher

51
Q

describe what can be seen on this

A

35 has a buccal cavity
36 has an occlusal amalgam restoration
37 has a buccal amalgam restoration

52
Q

what can be seen on this

A

distal amalgam restoration on 36

53
Q

what can be seen on this

A

36 has an MOD amalgam restoration
37 has a buccal and mesioocclusal amalgam restoration
38 has a mesioocclusal composite restoration

54
Q

how should radiographs be arranged

A

as if you were facing the patient
the maxillary teeth should be along the top, and mandibular the bottom
right side teeth on the left and vice versa
incisors toward the midline, molars toward the sides
occlusal planes toward the middle

55
Q

which anatomical features can be used to indicate which teeth are shown

A

crown morphology
root morphology
curve of spee
surrounding non dental anatomy

56
Q

what can crown morphology be used for

A

the shape and number of cusps

57
Q

what is included in root morphology

A

the number of roots to indicate the tooth type

58
Q

which teeth have one root

A

incisors, canines and some premolars

59
Q

which teeth have 2 roots

A

some premolars and mandibular molars

60
Q

which teeth have three roots

A

maxillary molars

61
Q

what is the curve of spee

A

the normal anatomical curvature of the occlusal plane
curves upward posteriorly

62
Q

what are some non dental anatomical features of maxillary teeth that can be used for identification

A

maxillary sinus
nasal cavity
maxillary tuberosity

63
Q

what are some non dental anatomical features of mandibular teeth that can be used for identification

A

inferior alveolar canal
mental foramen
inferior border of the mandible
external oblique ridge

64
Q

where is the mental foramen found

A

below the premolars

Clinical (27 decks)

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