Radiographs

Question 1

what are radiographs

Answer 1

images creating using x ray photons

Question 2

which molecules are used to produce radiographs

Answer 2

x ray photons

Question 3

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

Answer 3

receptors

Question 4

what does it mean if radiation is transmitted

Answer 4

it passes through the object unaltered

Question 5

what does it mean if radiation is absorbed

Answer 5

it is stopped by tissue

Question 6

what does it mean if radiation is scattered

Answer 6

it changes direction

Question 7

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

Answer 7

absorption and scattering

Question 8

what are the three main x ray interactions with matter

Answer 8

transmission
absorption
scattering

Question 9

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

Answer 9

green - transmission
red - absorption
yellow - scatteringq

Question 10

what does a radiographic image represent

Answer 10

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

Question 11

what is meant by attenuation

Answer 11

reduction of force or amplitude of radiation

Question 12

what do the shades of gray on radiagraphic images correspond to

Answer 12

the types of tissue that the x rays pass through

Question 13

what does radiolucent mean

Answer 13

darker areas on an image
less attenuation of the x rays

Question 14

what does radiopaque mean

Answer 14

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

Question 15

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

Answer 15

that there is more attenuation

Question 16

what is the main reason for using radiographs

Answer 16

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

Question 17

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

Answer 17

hard tissues that are mineralised

Question 18

what is the main cause of using radiographs in dentistry

Answer 18

caries

Question 19

how does caries appear on radiographs

Answer 19

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

Question 20

what is a bitewing radiograph used for

Answer 20

intraoral

Question 21

what is a periapical radiograph used for

Answer 21

intraoral

Question 22

what is an occlusal radiograph used for

Answer 22

intraoral

Question 23

what is a panoramic radiograph used for

Answer 23

extra oral

Question 24

what is a lateral cephalogram used for

Answer 24

extraoral

Question 25

what is a cone beam computed tomograph used for

Answer 25

cross sectional

Question 26

Answer 26

bitewing radiograph

Question 27

Answer 27

periapical radiograph

Question 28

Answer 28

occlusal radiograph

Question 29

Answer 29

panoramic radiograph

Question 30

Answer 30

lateral cephalogram

Question 31

Answer 31

cone beam computed through for a cross sectional radiograph

Question 32

what is a bitewing radiograph used for

Answer 32

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

Question 33

what does a bitewing radiograph show

Answer 33

crowns parts of roots some interdental bone

Question 34

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

Answer 34

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

Question 35

what is a periapical radiograph used for

Answer 35

providing a full length view of a particular tooth

Question 36

what is shown in a periapical radiograph

Answer 36

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

Question 37

how do the sizes of the periapical radiographs differ

Answer 37

between the anterior and posterior teeth

Question 38

how many dental arches imaged in bitewing radiographs

Answer 38

two

Question 39

how many dental arches imaged in periapical radiographs

Answer 39

one

Question 40

what is panoramic radiography used for

Answer 40

zoomed out view of the jaws

Question 41

what can be shown in panoramic radiography

Answer 41

entire dentition as well as jaws and mid face

Question 42

how can panoramic radiographs be described

Answer 42

full or sectional

Question 43

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

Answer 43

worse

Question 44

what are occlusal radiographs used for

Answer 44

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

Question 45

what are the angles that can be used for occlusal radiographs

Answer 45

anterior lateral true oblique

Question 46

what is the main use of occlusal radiographs

Answer 46

allowing teeth to be seen from different viewpoints

Question 47

what are cone bean computed tomographs used for

Answer 47

providing a cross sectional imaging of the teeth and jaws

Question 48

when are cone beam computed tomographs used for

Answer 48

when routine dental imagine cannot provide the required information

Question 49

what is the most expensive radiograph

Answer 49

cone beam computed tomographs

Question 50

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

Answer 50

higher

Question 51

describe what can be seen on this

Answer 51

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

Question 52

what can be seen on this

Answer 52

distal amalgam restoration on 36

Question 53

what can be seen on this

Answer 53

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

Question 54

how should radiographs be arranged

Answer 54

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

Question 55

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

Answer 55

crown morphology root morphology curve of spee surrounding non dental anatomy

Question 56

what can crown morphology be used for

Answer 56

the shape and number of cusps

Question 57

what is included in root morphology

Answer 57

the number of roots to indicate the tooth type

Question 58

which teeth have one root

Answer 58

incisors, canines and some premolars

Question 59

which teeth have 2 roots

Answer 59

some premolars and mandibular molars

Question 60

which teeth have three roots

Answer 60

maxillary molars

Question 61

what is the curve of spee

Answer 61

the normal anatomical curvature of the occlusal plane curves upward posteriorly

Question 62

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

Answer 62

maxillary sinus nasal cavity maxillary tuberosity

Question 63

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

Answer 63

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

Question 64

where is the mental foramen found

Answer 64

below the premolars