DENTAL RADIOLOGY QUESTIONS &
ANSWERS
The discoverer of x-rays was: - ANSWER Wilhelm Conrad Roentgen
The Dental x-Ray Tube Contains: - ANSWER Cathode
Anode
Focusing cup
All of the above
In a dental x-Ray ruble the electrons are emitted from the - ANSWER Anode
X-Ray is produced when electrons moving at high speed hit the tungsten target in a x-
rat the tube. - ANSWER Ture，
An assistant may hold the film in place for the patient during exposure - ANSWER False
Three-like or lightning-like black streaks on a processed film are caused be: - ANSWER
Bending the film
During pregnancy, a patient: - ANSWER Must never be exposed to radiation
In your office, the radiographs turn brown with age almost all of the time. What
corrective action can you take? - ANSWER Wash the film properly after fixing.
When the ID dot appears near the apex of a tooth, it means that: - ANSWER The film is
mounted incorrectly.
The film was placed in the film holder incorrectly.
Both a and b
A darkroom "safelight" should be at least----from the film being opened. - ANSWER 4
feet
Overlapping is caused by: - ANSWER Improper feeding of films in the processor.
As soon as a film is placed in a patient's mouth,it is considered contaminated. -
ANSWER Ture
Bite wing x-Rays show: - ANSWER Crowns and interproximal surfaces of teeth
In the paralleling technique, the x-Ray beam is directed perpendicular to the bisecting
line between the angle of the long axis of the tooth and the film. - ANSWER False
ANSWERS
The discoverer of x-rays was: - ANSWER Wilhelm Conrad Roentgen
The Dental x-Ray Tube Contains: - ANSWER Cathode
Anode
Focusing cup
All of the above
In a dental x-Ray ruble the electrons are emitted from the - ANSWER Anode
X-Ray is produced when electrons moving at high speed hit the tungsten target in a x-
rat the tube. - ANSWER Ture，
An assistant may hold the film in place for the patient during exposure - ANSWER False
Three-like or lightning-like black streaks on a processed film are caused be: - ANSWER
Bending the film
During pregnancy, a patient: - ANSWER Must never be exposed to radiation
In your office, the radiographs turn brown with age almost all of the time. What
corrective action can you take? - ANSWER Wash the film properly after fixing.
When the ID dot appears near the apex of a tooth, it means that: - ANSWER The film is
mounted incorrectly.
The film was placed in the film holder incorrectly.
Both a and b
A darkroom "safelight" should be at least----from the film being opened. - ANSWER 4
feet
Overlapping is caused by: - ANSWER Improper feeding of films in the processor.
As soon as a film is placed in a patient's mouth,it is considered contaminated. -
ANSWER Ture
Bite wing x-Rays show: - ANSWER Crowns and interproximal surfaces of teeth
In the paralleling technique, the x-Ray beam is directed perpendicular to the bisecting
line between the angle of the long axis of the tooth and the film. - ANSWER False
