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RADIATION SAFETY SCDA GIVEN STUDY GUIDE, Exams of Dental Radiology

Stanford UniversityDental Radiology

X rays - answer- produce a photographyic image of dental fil which is made visible through processing skin, teeth, and bone - answer- what can an X ray penetrate through? radiograph - answer- a photographyic record that can be seen on film that is produced by passing x rays through an object or a body kilovoltage, milliamperage, and time - answer- What are the three variable factors to consider in the proper setting of the controls on the x ray machine? kilovoltage - answer- the ability that x rays have to penetrate; affects the quality of radiographs produced milliamperage and time - answer- determines the number of x rays delivered (quanitity) from the x ray machine which are available to strike the film; determines the darkness or lightness of the image produced filters - answer- an aluminum disc placed within the x ray tubehead to remove the x rays that are not able to reach the film; this device protects the patient by preventing thee non-penetrating rays from

Typology: Exams

2025/2026

Available from 05/08/2026

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RADIATION SAFETY SCDA GIVEN STUDY GUIDE |UPDATED
ACTUAL EXAM QUESTIONS WITH CORRECT ANSWERS
100%
X rays - answer- produce a photographyic image of dental fil which is made visible through
processing
skin, teeth, and bone - answer- what can an X ray penetrate through?
radiograph - answer- a photographyic record that can be seen on film that is produced by passing
x rays through an object or a body
kilovoltage, milliamperage, and time - answer- What are the three variable factors to consider in
the proper setting of the controls on the x ray machine?
kilovoltage - answer- the ability that x rays have to penetrate; affects the quality of radiographs
produced
milliamperage and time - answer- determines the number of x rays delivered (quanitity) from the
x ray machine which are available to strike the film; determines the darkness or lightness of the
image produced
filters - answer- an aluminum disc placed within the x ray tubehead to remove the x rays that are
not able to reach the film; this device protects the patient by preventing thee non-penetrating rays
from stopping at the face
collimator - answer- a lead disc with a round or rectangular hole in the center that is
manufactured into the end of the dental cone; this limits the size of the x ray beam to the area
that is requested by the doctor
pf3
pf4

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RADIATION SAFETY SCDA GIVEN STUDY GUIDE |UPDATED

ACTUAL EXAM QUESTIONS WITH CORRECT ANSWERS

X rays - answer- produce a photographyic image of dental fil which is made visible through processing skin, teeth, and bone - answer- what can an X ray penetrate through? radiograph - answer- a photographyic record that can be seen on film that is produced by passing x rays through an object or a body kilovoltage, milliamperage, and time - answer- What are the three variable factors to consider in the proper setting of the controls on the x ray machine? kilovoltage - answer- the ability that x rays have to penetrate; affects the quality of radiographs produced milliamperage and time - answer- determines the number of x rays delivered (quanitity) from the x ray machine which are available to strike the film; determines the darkness or lightness of the image produced filters - answer- an aluminum disc placed within the x ray tubehead to remove the x rays that are not able to reach the film; this device protects the patient by preventing thee non-penetrating rays from stopping at the face collimator - answer- a lead disc with a round or rectangular hole in the center that is manufactured into the end of the dental cone; this limits the size of the x ray beam to the area that is requested by the doctor

cones - answer- long and lined with lead; recommended for modern dental radiography equipment genetic effect - answer- the effect of radiation exposure to the reproductive cells causing alterations in genetic doe which can possibly lead to mutations (changes) in offspring somatic effects - answer- the effects of radiation exposure that are expressed in the exposed person rather than the offspring i.e. cataracts, cancers sensitive cells - answer- cells in the developing embryo, reproductive cells, and blood forming tissue cells. the embryo - answer- the most senstitive of all human tissue, especially during the first three months of pregnancy thyroid gland and lens of the eye - answer- two sites near the oral cavity that are especially sensitive to radiation the general population, the occupational worker, and the pregnant woman - answer- who is the maximum permissible dose categorized for? using a personnel monitoring device; they are clipped to each employee's clothes during the work day and measuere the amount of radiation you may be receiving - answer- How can you tell if you are receiving below the maximum permissible doses? light films - answer- films that may be unreadable because there is not enough contrast or detail for the dentist to read them accurately light films - answer- What kind of film does this describe? -developing time too short

-fixer dropped or improper washing of fixer from films (yellow or brown stain) -developer (dark or brown spots) -fluoride on hands (fingerprint artifact) ~improper film positioning -cone cutting ~improper horizontal angulation (overlapping) -improper vertical tubehead angulation ~double exposure -improper instrument assembly ~film backwards -improper film selection ~film bending -overexposure and underexposure ~patient movement -film movement - answer- What are the most common exposure errors?