Radiographic Interp. 1 (Intraoral 2)

Front 1

At OUCOD, an FMX has how many images?

Back 1

18-24 (For us, specifically 20)

Front 2

What are the three main types of radiographic images?

Back 2

periapical, bitewing, occlusal

Front 3

On a PA, how much bone should be seen?

Back 3

2-4mm of normal bone

Front 4

What are the TWO uses of a bitewing film?

Back 4

evaluate crown and interproximal of both arches; evaluate interproximal crestal alveolar bone

Front 5

What does BID stand for?

Back 5

Beam indicating device

Front 6

What does PID stand for? What is it's purpose?

Back 6

Position indicating device; film holder

Front 7

What is defined as the imaginary beam of x-ray traveling from the BID?

Back 7

Central Ray

Front 8

If the BID is above the occlusal plane, is this considered positive or negative angulation?

Back 8

positive

Front 9

Dot in the ___

Back 9

slot (what the heck is the slot?)

Front 10

What are the three components of the XCP?

Back 10

bite block, aiming ring, indicator arm

Front 11

Overangulation leads to ____ of structures.

Back 11

foreshortening

Front 12

Underangulation leads to ____ of structures.

Back 12

elongation

Front 13

The dot should always be facing (towards/away from) the incoming x-ray beam?

Back 13

towards

Front 14

On a PA, should the dot be towards the crown or the root of the teeth?

Back 14

towards the crown (in a PA, we are looking for root information)

Front 15

On a bitewing, should the dot be towards the crown or the root of the teeth?

Back 15

toward the root (in a bitewing, we are looking for crown and interproximal information)

Front 16

True or False, the tooth of interest should be towards the bottom of the XCP ring.

Back 16

False, should be centered.

Front 17

Film should be (parallel/at a 60 degree angle/at a 30 degree angle) to long axis of the tooth

Back 17

parallel

Front 18

True or False, the central ray should be aimed perpendicular to the long axis of the tooth AND the film

Back 18

True

Front 19

In the FMX, what size of film is used for anterior PA? posterior PA? Bitewings?

Back 19

1, 2, 2

Front 20

How many TOTAL bitewings are included in an FMX?

Back 20

4 (2 on each side... 1 molar and 1 premolar)

Front 21

On a Maxillary central-lateral film, what film size is used?

Back 21

1 (vertically)

Front 22

On a Maxillary central-lateral film, where should you point the central ray?

Back 22

between central and lateral contact

Front 23

On a Maxillary central-lateral film, how much bone should be visible beyond the apices?

Back 23

2-4mm

Front 24

On a Maxillary central-lateral film, what landmark should be centered?

Back 24

the contact between central and lateral

Front 25

On a Maxillary canine film, what film size is used?

Back 25

1 (vertically)

Front 26

On a Maxillary canine film, where should you point the central ray?

Back 26

mesial contact of canine

Front 27

On a Maxillary canine film, the (mesial/distal) contact should be OPEN

Back 27

mesial (we don't care about the distal contact on a canine film)

Front 28

On a Maxillary canine film, what landmark should be centered on the film?

Back 28

the canine tooth itself

Front 29

On a Maxillary premolar film, what film size is used?

Back 29

2 (horizontally)

Front 30

On a Maxillary premolar film, where should you point the central ray?

Back 30

2 options: between 1st and 2nd premolar OR between 2nd premolar and 1st molar

Front 31

On a Maxillary premolar film, what contacts should be open?

Back 31

distal of canine, and contact between premolars

Front 32

On a Maxillary premolar film, the buccal and lingual cusps (should/should not) be superimposed

Back 32

should (ideally this will work)

Front 33

On a Maxillary premolar film, should the occlusal plane of the teeth be seen?

Back 33

Yes

Front 34

On a Maxillary molar film, what film size is used?

Back 34

2 (horizontally)

Front 35

On a Maxillary molar film, where should the central ray be directed?

Back 35

through contact of 1st and 2nd molar

Front 36

On a Maxillary molar film, what significant landmark should be visible?

Back 36

Maxillary tuberosity (the 3rd molar area)

Front 37

On a mandibular central-lateral film, you want the same parameters as you did on the maxillary (true or false)

Back 37

true

Front 38

On mandibular films, the film needs to be placed between the teeth and what other oral structure?

Back 38

the tongue

Front 39

On a mandibular canine film, you want the same parameters as you did on the maxillary (true or false)

Back 39

true

Front 40

On a mandibular premolar film, you want the same parameters as you did on the maxillary (true or false)

Back 40

true

Front 41

On a mandibular molar film, you want the same parameters as you did on the maxillary (true or false)

Back 41

true (except the maxillary tuberosity is replaced by the ascending ramus, the 3rd molar area on the mandible)

Front 42

The 4 bitewings films are placed (vertically, horizontally) and are a size ___

Back 42

horizontally, 2

Front 43

True or False, in all 4 bitewing films, it's ok to have overlapping contacts as long as at least half are open

Back 43

false, they ALL must be open!

Front 44

Who invented the bitewing?

Back 44

Howard Raper (1926)

Front 45

What type of film is best for detecting interproximal caries?

Back 45

bitewing

Front 46

Alveolar bone loss is best shown on what type of film?

Back 46

bitewing

Front 47

Which type of bitewing (vertical or horizontal) shows MORE alveolar bone?

Back 47

vertical

Front 48

Occlusal radiographs are taken with size ____ film

Back 48

4

Front 49

What film should be used to detect major damage like fractures, and impacted teeth?

Back 49

occlusal radiograph (size 4)

Front 50

On a MAXILLARY occlusal radiograph, the central ray is directed at a (horizontal/vertical) angulation of how many degrees?

Back 50

vertical, 60-65 degrees

Front 51

On a MANDIBULAR occlusal radiograph, how should you position the central ray?

Back 51

perpendicular to the center of the film, below the chin, 3cm from the chin

Front 52

What is the proper name for a mouth with no teeth?

Back 52

edentulous ridge

Front 53

How much less exposure is there on an edentulous ridge? How many films are used?

Back 53

25% less, 14 films (all size 2)

Front 54

If available, what is the simplest and most comfortable method of obtaining a radiograph of an edentulous ridge?

Back 54

panoramic radiograph

Front 55

Why should you keep anesthetic spray handy in the x-ray room?

Back 55

for patients with sensitive gag reflexes

Front 56

On a MANDIBULAR occlusal radiograph, how should you position the central ray?

Back 56

perpendicular to the center of the film, below the chin, 3cm from the chin

Front 57

What is the proper name for a mouth with no teeth?

Back 57

edentulous ridge

Front 58

How much less exposure is there on an edentulous ridge? How many films are used?

Back 58

25% less, 14 films (all size 2)

Front 59

If available, what is the simplest and most comfortable method of obtaining a radiograph of an edentulous ridge?

Back 59

panoramic radiograph

Front 60

Why should you keep anesthetic spray handy in the x-ray room?

Back 60

for patients with sensitive gag reflexes

Front 61

Which of these is in the proper orientation? (red or green)

Back 61

green

Front 62

Is this over or under angulation?

Back 62

over

Front 63

Is this over or under angulation?

Back 63

under

Front 64

What is indicated by the blue, green, and red boxes?

Back 64

blue - bite block
green - aiming ring
red - indicator arm

Front 65

What is indicated by the red and blue box?

Back 65

red - max tuberosity
blue - coronoid process