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SC Dental Radiology Exam Questions and
Answers (100% Correct Answers) Already
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xrays are a form of ____ radiation and can ___ or ___ through the human
body and produce ___ images. Ans: Electromagnetic radiation
,Penetrate or pass, shadow-like
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Xrays, also known as ___ , are a photographic image that can be seen
on Film/screen. Ans: Xrays
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How are xray images produced? Ans: By directing Xray beams, invisible
straight lines traveling at constant speed and made visible by processing
the image.
How are radiographs used?? Ans: To help dentists prevent, monitor and
diagnose potential oral health care issues in a patients mouth before a
major problem occurs.
How are xrays produced? Ans: by a machine whose source is energy
through electricity. Xrays are invisible beams that travel in a straight line
that can pass through soft tissue and be absorbed by dense tissue.
How can radiation effect the body? Ans: It can effect body tissues and
cells that can carry hereditary materials for future generations
What are the most common type of xrays?diagnose: Ans: Intraoral
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Xrays for adults: Ans: Decay between teeth, decay under filling, bone
loss from perio disease, problems at root (infection or death in nerve),
detect cysts, cancer or changes caused by disease.
Xrays for kids/teens: Ans: Find decay damage to fillings, monitor tooth
growth/ development, determine if permanent teeth are coming in
properly, see if teeth are impacted and help plan, prep and place
braces.
What does NCRP stand for? What does this agency do? Ans: NCRP
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stands for National Council on Radiation Protection. Estab.
recommendations for acceptable levels of radiation exposure.
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What are MPDs? Ans: Maximum permissible dose and categorized for
gen pop, occup. worker and pregnant women. represents greatest
amount of radiation exposure accepted as not producing significant
harmful biological effects.
Annual radiation dose limit for adults Ans: 5 rems (0.05Sv)
How is radiation dose measured? Ans: Measures how much energy is
absorbed when something or someone is exposed to Xrays. The
absorption of energy can cause damage to a person
2 common ways radiation is measured Ans: At pt skin surface (entrance
surface air Kerma) and effective dose.
How is radiation dose Described? Ans: Using the quantity effective dose,
expressed in millisievert (mSv)
What is the fatal dose of an Xray exam? Ans: 0.3 uSv