Radio Exam 2

Question 1

Calibration of dental X-ray equipment can be performed by a dentist, hygienist or assistant

Answer 1

Flash

Question 2

Annual tests for dental X-ray machines can be performed by a dentist, hygienist, or assistant

Answer 2

True

Question 3

For quality control purposes, each new box of unopened film should be tested for film freshness and fogging before use

Answer 3

True

Question 4

After processing, fresh film that has been properly stored and protected will appear

Answer 4

Clear with slight blue tint

Question 5

After performing the screen film contact test, a wire mesh image of uniform density appears. These results indicate

Answer 5

Adequate film-screen contact

Question 6

When functioning properly, a viewbox should emit a uniform and intense light

Answer 6

False

Question 7

One of the most critical areas of quality control that requires daily monitoring is

Answer 7

Processing of film

Question 8

The coin test is used to check

Answer 8

Proper safelighting

Question 9

The following must be closely monitored with manual processing techniques

Answer 9

Temp of water bath, levels of processing solution, accuracy of timer/thermometer

Question 10

On the average, processing solutions should be changed

Answer 10

Every 3 to 4 weeks

Question 11

On the average, processing solutions should be replenished

Answer 11

Once daily

Question 12

Fresh films and fresh chemicals must be used when preparing reference radiographs

Answer 12

True

Question 13

A reference radiograph is used to check

Answer 13

Strength of the developer solution

Question 14

The densities seen on the daily image appear lighter than the densities seen on the reference radiograph; this result indicates that

Answer 14

The developer solution is too weak/too cold

Question 15

The clearing test is used to monitor

Answer 15

Fixer strength

Question 16

Regardless of who actually exposes the patient to radiation, the dentist is ultimately responsible for the diagnostic quality of all dental images

Answer 16

True

Question 17

What happens to image when the object-receptor distance is increased

Answer 17

Image magnification and loss of definition

Question 18

What piece of equipment is required to hold the receptor parallel to the long axis of the tooth

Answer 18

Film holder

Question 19

What do the letters X,C,P refer to

Answer 19

X=extension C=cone (PID) P=paralleling

Question 20

What size receptor is typically used with the anterior RINN XCP instrument

Answer 20

Size 1 (in book)OCC/offices size 2

Question 21

What size receptor is used for posterior RINN XCP instrument

Answer 21

Size 2

Question 22

Which beam alignment devices are recommended for use with paralleling tech to reduce radiation exposure

Answer 22

Precision film holders RINN XCP instruments with snap on rings

Question 23

How is patients head positioned before exposing receptors

Answer 23

Maxillary arch parallel to floor and midline perpendicular to the floor

Question 24

Why is increased target receptor distance required in the paralleling tech

Answer 24

To avoid image magnification

Question 25

Which describes the relationship of the central ray to the receptor in the paralleling tech

Answer 25

90 degrees to the receptor and long axis of the tooth

Question 26

Right angle

Answer 26

Formed by two perpendicular lines

Question 27

Which describes the relationship between the receptor and that long axis of the tooth with paralleling tech

Answer 27

Receptor and tooth are parallel to each other

Question 28

What describes the distance between the receptor and the tooth in parallel tech

Answer 28

Receptor placed away from tooth and toward middle of oral cavity

Question 29

What are advantages of paralleling tech

Answer 29

Increased accuracy, simplicity of use, ease of duplication

Question 30

Advantages of paralleling outweigh disadvantages

Answer 30

True

Question 31

If the lack of parallelism is less than ______ the image is generally acceptable

Answer 31

20

Question 32

What happens to dental image when a short PID is used

Answer 32

Magnification

Question 33

Which size receptor used with bisecting tech

Answer 33

1 or 2

Question 34

Which beam alignment device recommended for bisecting tech because it aids in alignment of PID and reduces exposure

Answer 34

RINN BAI instruments

Question 35

Proper direction of central ray in bisecting tech

Answer 35

90 degrees to imaginary bisector

Question 36

Distance between receptor and tooth in bisecting tech

Answer 36

Receptor placed as close as possible to tooth

Question 37

Advantage of bisecting tech

Answer 37

Shorter exposure time

Question 38

Disadvantages of bisecting outweigh advantages

Answer 38

True

Question 39

Anatomic order refers to how teeth are arranged in dental arches

Answer 39

True

Question 40

A clear film mount is preferred for better interpretation of radiographs

Answer 40

False

Question 41

Only the dentist is qualified to mount dental radiographs

Answer 41

False

Question 42

Films may be mounted at any time after processing

Answer 42

False

Question 43

Film viewing refers to the placing of films in a supporting structure

Answer 43

False

Question 44

If viewbox screen is not completely covered by the mounted radiographs, the harsh light around the mounted films must be masked to reduce glare and for better interpretation

Answer 44

True

Question 45

Optimal viewing conditions are typically present in the dental setting

Answer 45

False

Question 46

Rule of isometry

Answer 46

Central ray hits receptor to make 90 degree angle with bisector

Question 47

Elongation

Answer 47

Too little/flat angulation

Question 48

Foreshortening

Answer 48

Too much/steep angulation

Question 49

To conduct the film-screen contact test,the PID should have a _____-inch target-film distance

Answer 49

40

Question 50

Areas of poor film-screen contact appear darker than good contact areas

Answer 50

True

Question 51

To conduct the coin test, the film and coin are exposed for

Answer 51

3-4 minutes

Question 52

How to test automatic film processor

Answer 52

Unwrap two unexposed films, expose one to light, and then process both film in the automatic processor

Question 53

A reference radiograph is compared with a radiograph taken each day for matched

Answer 53

Density

Question 54

When the stepwedge tech is used to evaluate developer strength, if density on the daily radiograph differs from that on the standard radiograph by more than ____ steps, the developer solution is depleted

Answer 54

2

Question 55

The clearing test is used to monitor

Answer 55

Fixer strength

Question 56

Incisive foramen maxilla anterior

Answer 56

Radiolucent

Question 57

Anterior border of maxillary

Answer 57

Radiopaque

Question 58

Nasal septum maxilla anterior

Answer 58

Radiopaque

Question 59

Soft tissue of nose maxilla anterior

Answer 59

Radiopaque

Question 60

Maxillary sinus maxilla posterior

Answer 60

Radiolucent

Question 61

Maxillary tuberosity maxilla posterior

Answer 61

Radiopaque

Question 62

Lingual foramen anterior mandible

Answer 62

Radiolucent

Question 63

Mental foramen posterior mandible

Answer 63

Radiolucent

Question 64

Denton and decay are

Answer 64

Radiolucent

Question 65

Enamel is

Answer 65

Radiopaque

Question 66

Posterior indicator arm

Answer 66

2 curves in metal

Question 67

Anterior ring

Answer 67

Extension located off to the side rather than straight

Question 68

Steps for fresh film test

Answer 68

Prepare the film by unwrapping unexposed film, process film. If clear then good if foggy may be expired

Question 69

Safelight coin test

Answer 69

Prep the darkroom turn off all lights in darkroom, prep film unwrap and place 4 feet from safelight place coin on top, turn on safelight and expose for 3-4 minutes, process film

Question 70

Clearing test steps

Answer 70

Unwrap and place immediately in fixer, measure time takes film to clear if fast fixer is right strength

Question 71

Rules for paralleling tech

Answer 71

Receptor placement, receptor position, vertical angulation, horizontal angulation, receptor exposure

Question 72

Radiopaque

Answer 72

Can't see through

Question 73

Radiolucent

Answer 73

Can see through