Dental Radiology Exam Practice Questions and Answers (100% Pass)
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Course
Dental Radiology
Institution
Dental Radiology
Dental Radiology Exam Practice
Questions and Answers (100% Pass)
What is the inverse square law when it comes to radiation - Answer️️ -
Standing back by double the distance from a source of radiation (d to 2d)
will quarter the dose to the radiologist or radiographer. It means that when
you...
Dental Radiology Exam Practice
Questions and Answers (100% Pass)
What is the inverse square law when it comes to radiation - Answer✔️✔️-
Standing back by double the distance from a source of radiation (d to 2d)
will quarter the dose to the radiologist or radiographer. It means that when
you double the distance from the source of radiation, the intensity of
radiation is diminished to a 1/4 of what it was originally.
which exposure technique do the american academy of oral and
maxillofacial radiology and the american association of dental schools
recommend? - Answer✔️✔️-parallel
why is an exposure sequence important? - Answer✔️✔️-so areas of the
mouth are not missed or retaken?
when you are exposing images, in which area of the mouth should you
begin? - Answer✔️✔️-maxillary anterior
When exposing the posterior radiographs which teeth should you start
with - Answer✔️✔️-Pre molar area
What size film should be used for a bite wing series? - Answer✔️✔️-Size #2
films
How many films are in a bitewing series? - Answer✔️✔️-4, 2 premolar
images and 2 molar images
Why are occlusal radiographs ordered? - Answer✔️✔️-When there is a need
to view large areas on the maxilla and the mandible.
For partial edentulous patients, how can you modify the technique of using
a bite block to take x-rays? - Answer✔️✔️-By placing a cotton roll on the bite
block where the teeth would have been.
which exposure should be the first for the posterior regions? - Answer✔️✔️-
mandibular premolar
What changes must be made on the exposure factor when taking x rays on
a child patient? - Answer✔️✔️-Reductions on the exposure factors
What size film is recommended for a child patient with all primary teeth? -
Answer✔️✔️-Size #0
When mounting radiographs, where is the recommended placement of the
dot? - Answer✔️✔️-The raised dot facing the dental specialist.
What is the recommended temperature for the developing solution? -
Answer✔️✔️-68degreesF, 20degreesC for 4.5 minutes
How long should the film be rinsed after the developer? - Answer✔️✔️-20-30
seconds to remove developer solutions
How long should the film stay in the fixer solutions? - Answer✔️✔️-10
minutes
After the fixer how long should the film be rinsed and why? - Answer✔️✔️-
It should be rinsed for at least 20 minutes if not the film could turn yellow
and fade over time.
FOGGED FILM - Answer✔️✔️-Fogged film may be caused by:
Exposure of film to light during storage.
Leaving film unprotected (that is, outside the lead-lined box or in the x-ray
room during operation of the x-ray machine).
Use of film that has been exposed to heat or chemical fumes.
Use of improperly mixed or contaminated developer.
Defective safelight.
No image - Answer✔️✔️-No image may result if no current was passing
through the tube at the time of exposure or if the film was placed in the
fixing solution before it was placed in the developing solution.
How long is the process for automatic processing from beginning to end? -
Answer✔️✔️-4-6 minutes
3-11. OVEREXPOSED IMAGE
An overexposed image (see figure 3-12), an image that is too dark, may be
caused by:
3
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