1
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SCDA Radiation Safety, SCDA Radiation
Safety Exam, RADIATION SAFETY SCDA
Given Study Guide Questions and
Answers (100% Correct Answers) Already
Graded A+
X-rays are also known as what? [ ANS: ] Radiographs
What are x-rays? [ ANS: ] Photographic images that can be seen
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on film/screen
How are x-rays produced? [ ANS: ] By directing the x-ray beams,
invisible straight lines traveling at a constant speed and made
visible by processing the image
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What are x-rays used for? [ ANS: ] Help prevent, monitor, and
diagnose potential oral health care issues in a patients mouth
before they become a major problem
X-rays are produced by what type of machine? [ ANS: ] A
machine whose source of energy is electricity
How are teeth captured on x-rays? [ ANS: ] X-rays pass through
soft tissues and are absorbed by dense tissue. Teeth and bone are
very dense so, they absorb x-rays while x-rays pass more easily
through gums & cheeks
Radiation can affect body tissues & cells that can carry what? [
ANS: ] Hereditary materials for future generations
What is the most common type of radiograph in dentistry? [ ANS: ]
Intraoral x-rays
What are some things x-rays for adults do? [ ANS: ] 1. Detect areas
of decay that can not be seen just looking in the mouth
(especially decay between teeth)
, 2
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2. Detect decay under fillings
3. Detect cracks or other damaging in fillings
4. Alert the dentist to possible bone loss from periodontal (gum)
disease
5. Show problems in the root of a tooth, such as infection or death
of the nerve
6. Help the dentist plan, prepare and place tooth implants,
braces, dentures or other dental work
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7. Detect other problems, such as cysts, cancer or changes
caused by diseases of the body
What are some things x-rays for children & teens do? [ ANS: ] 1.
Find decay, damage to fillings & monitor tooth growth and
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development
2. Determine if permanent teeth are developing & coming in
properly
3. See if any teeth are impacted (unable to come through the
gums)
4. Help the dentist plan, prepare & place braces
Who established recommendations as to acceptable levels of
exposure to ionizing radiation? [ ANS: ] National Committee on
Radiation Protection (NCRP)
What are the recommendations as to acceptable levels of
exposure to ionizing radiation called? [ ANS: ] Maximum
permissible dose (MPD)
What does the MPD (maximum permissible dose) represent? [
ANS: ] Greatest amount of radiation exposure that is accepted as
not producing significant harmful biological effects
, 3
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What is the annual occupational dose limit of radiation for adults?
[ ANS: ] Total effective dose equivalent being equal to 5 rem
(0.05Sv)
What is the annual occupational dose limit of radiation for minors?
[ ANS: ] 10% of the annual occupational dose limit specified for
adults
What is radiation dose? [ ANS: ] Measure of how much energy is
absorbed when something or someone is exposed to X-rays
What are the 2 commonly used ways of talking about radiation
dose in dental procedures? [ ANS: ] 1. Dose estimated at the
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patients skin surface (correctly known as "entrance surface air
kerma")
2. Effective dose
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What is effective dose? [ ANS: ] Dose estimated at the skin surface
& is easier to measure and is used in national surveys of x-ray
equipment
How is radiation dose (dose) described? [ ANS: ] Using the quantity
effective dose, expressed in millisievert (mSv)
Dental radiology dose levels are usually a small fraction of what? [
ANS: ] One gray (milli gray : mGy or even micro gray)
What is the effective dose for intraoral dental x-ray imaging
procedures? [ ANS: ] 1-8 uSv
What is the effective dose for panoramic examinations? [ ANS: ] 4-
30 uSv
What is the effective dose for cephalometric examinations? [ ANS:
] 2-3 uSv
What is the effective dose for CBCT procedures for small dento-
alveolar volumes? [ ANS: ] 34-652 uSv
For Expert help and assignment solutions, +254707240657
SCDA Radiation Safety, SCDA Radiation
Safety Exam, RADIATION SAFETY SCDA
Given Study Guide Questions and
Answers (100% Correct Answers) Already
Graded A+
X-rays are also known as what? [ ANS: ] Radiographs
What are x-rays? [ ANS: ] Photographic images that can be seen
© 2025 Assignment Expert
on film/screen
How are x-rays produced? [ ANS: ] By directing the x-ray beams,
invisible straight lines traveling at a constant speed and made
visible by processing the image
Guru01 - Stuvia
What are x-rays used for? [ ANS: ] Help prevent, monitor, and
diagnose potential oral health care issues in a patients mouth
before they become a major problem
X-rays are produced by what type of machine? [ ANS: ] A
machine whose source of energy is electricity
How are teeth captured on x-rays? [ ANS: ] X-rays pass through
soft tissues and are absorbed by dense tissue. Teeth and bone are
very dense so, they absorb x-rays while x-rays pass more easily
through gums & cheeks
Radiation can affect body tissues & cells that can carry what? [
ANS: ] Hereditary materials for future generations
What is the most common type of radiograph in dentistry? [ ANS: ]
Intraoral x-rays
What are some things x-rays for adults do? [ ANS: ] 1. Detect areas
of decay that can not be seen just looking in the mouth
(especially decay between teeth)
, 2
For Expert help and assignment solutions, +254707240657
2. Detect decay under fillings
3. Detect cracks or other damaging in fillings
4. Alert the dentist to possible bone loss from periodontal (gum)
disease
5. Show problems in the root of a tooth, such as infection or death
of the nerve
6. Help the dentist plan, prepare and place tooth implants,
braces, dentures or other dental work
© 2025 Assignment Expert
7. Detect other problems, such as cysts, cancer or changes
caused by diseases of the body
What are some things x-rays for children & teens do? [ ANS: ] 1.
Find decay, damage to fillings & monitor tooth growth and
Guru01 - Stuvia
development
2. Determine if permanent teeth are developing & coming in
properly
3. See if any teeth are impacted (unable to come through the
gums)
4. Help the dentist plan, prepare & place braces
Who established recommendations as to acceptable levels of
exposure to ionizing radiation? [ ANS: ] National Committee on
Radiation Protection (NCRP)
What are the recommendations as to acceptable levels of
exposure to ionizing radiation called? [ ANS: ] Maximum
permissible dose (MPD)
What does the MPD (maximum permissible dose) represent? [
ANS: ] Greatest amount of radiation exposure that is accepted as
not producing significant harmful biological effects
, 3
For Expert help and assignment solutions, +254707240657
What is the annual occupational dose limit of radiation for adults?
[ ANS: ] Total effective dose equivalent being equal to 5 rem
(0.05Sv)
What is the annual occupational dose limit of radiation for minors?
[ ANS: ] 10% of the annual occupational dose limit specified for
adults
What is radiation dose? [ ANS: ] Measure of how much energy is
absorbed when something or someone is exposed to X-rays
What are the 2 commonly used ways of talking about radiation
dose in dental procedures? [ ANS: ] 1. Dose estimated at the
© 2025 Assignment Expert
patients skin surface (correctly known as "entrance surface air
kerma")
2. Effective dose
Guru01 - Stuvia
What is effective dose? [ ANS: ] Dose estimated at the skin surface
& is easier to measure and is used in national surveys of x-ray
equipment
How is radiation dose (dose) described? [ ANS: ] Using the quantity
effective dose, expressed in millisievert (mSv)
Dental radiology dose levels are usually a small fraction of what? [
ANS: ] One gray (milli gray : mGy or even micro gray)
What is the effective dose for intraoral dental x-ray imaging
procedures? [ ANS: ] 1-8 uSv
What is the effective dose for panoramic examinations? [ ANS: ] 4-
30 uSv
What is the effective dose for cephalometric examinations? [ ANS:
] 2-3 uSv
What is the effective dose for CBCT procedures for small dento-
alveolar volumes? [ ANS: ] 34-652 uSv
