BU Dental Radiology final test Latest Update
Actual Exam with Questions and 100%
Verified Correct Answers Guaranteed A+
Which if not a safety precaution for taking x-rays?
-Always stand behind an appropriate barrier?
-Never stand in the path of primary radiation
-Never stabilize the tube head during radiation
-If neccessary hold the film in the pt's mouth Correct Answer If
neccessary hold the film in the pt's mouth, never hold the film or
sensor in the pts mouth.
X-rays travel at the speed of light? Correct Answer True
Nerve cells can be regennerated? Correct Answer False, No-
Dense things like bone can and perm fixtures, restorations.
Which of these have an infulence on radiation protection?
-Safe equipment
-Skilled operator
-Lead aprons and thyroid collars
-All of the above Correct Answer All of the above
primary radiation Correct Answer travels from source to detector
(useful)
scatter radiation Correct Answer changes direction during
passage through intervening med
Leakage radiation Correct Answer : radiation that originates from
the X-ray tube and is not the primary beam.
, Filters in an x-ray tube is made of what? Correct Answer
Aluminum
The radiographs which reveal the entire teeth with the apical
region is called what? Correct Answer Periapical
X-ray instruments should always be what? Correct Answer
Sterlized
Film Composition Correct Answer Film has a green color. The
film has emulsion on both sides. There are two principal
components:
periapical film size (central/lateral/canine) Correct Answer 0 or 1
periapical film size (premolar/molar) Correct Answer 2
premolar bitewing film size Correct Answer 2
Base of film Correct Answer Plastic supporting material on which
the emulsion is coated with an adhesive.
Tree-like lightening black streaks on a processed film are caused
by what? Correct Answer Static electricity when drying
During pregancy a partiant may be irradiated by taking necessary
precations? True or False Correct Answer True
In your office the radiographs turn brown with age almost all of the
time. What corrective action do you take? Correct Answer Wash
the film properly after fixing
When the ID dot appers near the apex of the tooth it means what?
Correct Answer The film was placed in the holder incorrectly
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