Dental Assistant Practice Exam- Dental
Radiography Questions With Correct
Answers
Which of the following is NOT part of a film packet? Inner wrap
What makes it possible to produce duplicate sets of radiographs without additional radiation or
the need to use a duplicating machine? Using double film packets
What size film is usually used for occlusal radiographs? 4
What size film is appropriate for use as a PA on an upper incisor? 1
What use is a size 2 film most appropriate for? Posterior PAs and Adult BWX
Which of the following is one of the basic techniques for obtaining x-rays? Paralleling
What technique places film in line with the long axis of the teeth to be radiographed?
Paralleling
When using the paralleling technique, in what direction is the x-ray beam aimed? 90
degrees
,Which of the following requires the use of a film-holding instrument? Paralleling
technique
When placing a film in a PID, which of the following is correct? The raised dot should
face the PID and toward the occlusal surface
What is the position on the patient's face where the central x-ray beam is aimed? Point of
entry
What angulation must be perpendicular to the film and long axis of the teeth using the paralleling
technique? Vertical
Failing to have the x-ray beam in a perpendicular position in a paralleling technique will result
in: Foreshortening and Elongation
What will cause overlapping of proximal contacts? Improper horizontal angulation
In bisecting the angle, which of the following is NOT true? The film is placed at 30
degrees from the long axis of the tooth and the angle between is bisected
What occurs when the x-ray beam is not centered with the xray film? Cone cutting
, FMX series consist of: 18-20 films including both PA and BWX films
Premolar BWX should include: The distal half of the cuspid crown
Molar BWX film should be placed: Centered over the 2n molars
What improper placement can cause misdiagnosis on BWX x-rays? Incorrect horizontal
angulation
Where is the film placed when occlusal films are taken? Directly against the occlusal
surfaces
Which of the following is NOT a use for occlusal radiographs? To locate periapical
abscesses
The white side of intraoral film should always face: Toward the teeth
After processing a film, it comes out completely clear. What is the probable cause? X-ray
machine did not expose the film.
When the vertical angulation of the x-ray beam is too low, it will cause: Elongation
Blurred images on a film may be caused by: The patient moving
Radiography Questions With Correct
Answers
Which of the following is NOT part of a film packet? Inner wrap
What makes it possible to produce duplicate sets of radiographs without additional radiation or
the need to use a duplicating machine? Using double film packets
What size film is usually used for occlusal radiographs? 4
What size film is appropriate for use as a PA on an upper incisor? 1
What use is a size 2 film most appropriate for? Posterior PAs and Adult BWX
Which of the following is one of the basic techniques for obtaining x-rays? Paralleling
What technique places film in line with the long axis of the teeth to be radiographed?
Paralleling
When using the paralleling technique, in what direction is the x-ray beam aimed? 90
degrees
,Which of the following requires the use of a film-holding instrument? Paralleling
technique
When placing a film in a PID, which of the following is correct? The raised dot should
face the PID and toward the occlusal surface
What is the position on the patient's face where the central x-ray beam is aimed? Point of
entry
What angulation must be perpendicular to the film and long axis of the teeth using the paralleling
technique? Vertical
Failing to have the x-ray beam in a perpendicular position in a paralleling technique will result
in: Foreshortening and Elongation
What will cause overlapping of proximal contacts? Improper horizontal angulation
In bisecting the angle, which of the following is NOT true? The film is placed at 30
degrees from the long axis of the tooth and the angle between is bisected
What occurs when the x-ray beam is not centered with the xray film? Cone cutting
, FMX series consist of: 18-20 films including both PA and BWX films
Premolar BWX should include: The distal half of the cuspid crown
Molar BWX film should be placed: Centered over the 2n molars
What improper placement can cause misdiagnosis on BWX x-rays? Incorrect horizontal
angulation
Where is the film placed when occlusal films are taken? Directly against the occlusal
surfaces
Which of the following is NOT a use for occlusal radiographs? To locate periapical
abscesses
The white side of intraoral film should always face: Toward the teeth
After processing a film, it comes out completely clear. What is the probable cause? X-ray
machine did not expose the film.
When the vertical angulation of the x-ray beam is too low, it will cause: Elongation
Blurred images on a film may be caused by: The patient moving
