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Dental radiology board review Questions and Answers 100% Correct | Latest Update
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Dental radiology board review Questions andAnswers 100% Correct | Latest Update 2024-
2025
Which radiology innovator is known as the father of the science of radiation
protection? - ANSWER Willhelm Roentgen
What is the source of electrons used for x-ray production? - ANSWER Tungsten
filament
Where does the generation of xrays in the xray tube actually occur? - ANSWER
Tungsten target
Which theory best describes the free radical formation that is so injurious to living
tissue? - ANSWER Indirect theory
What unit of radiation represents the amount of radiation energy absorbed by the
tissue? - ANSWER Gray
What factor is most important when considering the biologic effects of radiation
used in dentistry? - ANSWER Limited area exposure
Which cell type is the most sensitive to radiation? - ANSWER Immature cells
What reduces operator exposure to radiation? - ANSWER Distance
, Which radiographic technique has less distortion and magnification and creates a
more accurate image on film? - ANSWER Paralleling
What is used to restrict the size of the xray beam? - ANSWER Collimation
If the source-to-film distance is changed from 8 to 24 inches, the intensity of the
beam becomes __________. - ANSWER 1/9th as intense
The greatest cause of human radiation effects in dental radiography involve
_________. - ANSWER Free radicals of water
Cell sensitivity to radiation is most pronounced when? - ANSWER During
mitosis, periods of increased metabolism and during embryonic development
How many impulses equal a 1/4 second exposure time? - ANSWER 15
As you go from a "D-speed" film to an "E-speed" film, the exposure time should be
approximately ________. - ANSWER Halved
The mA setting controls what? - ANSWER Heat of the tube filament
Number of free electrons in the tube
number of photons ultimately produced
The density of the film
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