SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
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SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
SCDA Radiation Safety Test Study Guide
What are X-rays?
A form of electromagnetic radiation that pass through the human body to
produce images of bone/teeth/nerves
A licensed X-ray employer must
take all precautions necessary to provide protection to all individuals
exposed to radiation
Radiographs are used to
help a dentist prevent, monitor and diagnose potential health issues in a
patient's mouth
X-rays are
invisible beans that pass through soft tissue and are absorbed by dense
tissue to produce detailed images
Radiation can
Affect body tissues and cells that can carry hereditary materials for future
generations
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
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SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
Intraoral X-rays
are the most common type of x-ray, they give a high level of detail of the
tooth, bone and supporting tissues of the mouth.
Adult issues detected by x-rays
areas of decay, damages in filings, possible dental/periodontal disease,
infection or nerve death, place or plan bone for implants
Child and teen issues detected by x-rays
find decay, monitor tooth growth and development, determine if permanent
teeth are coming in properly, help plan braces
NCRP
National Committee on Radiation Protection
The NCRP has
established acceptable levels of ionizing radiation exposure
MPD
maximum permissible dose
The MPD is
radiation doses recommended for the general population, occupational
worker and pregnant person
Occupational radiation limit for adults
5 rem (0.05Sv), and 10% of that for minors
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
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SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
Radiation dose is
a measure of how much energy is absorbed when something is exposed to
x-rays
Effective dose
dose estimated at the skin surface and used to directly infer radiation
associated risk, expressed in millisievert (mSv).
Effective doses are
intraoral dental x-ray imaging (1-8 uSv), Panoramic (4-30 uSv),
Cephalometric (2-3 uSv) and CBCT (dento-alveolar 34-652 uSv or
craniofacial 30-1079 uSv)
Total effective dose equivalent
to individual members of the public does not exceed .01 mSv
Fetal dose
0.3 mSv
Intraoral radiographs
the most common type, used to find cavities, tooth roots, health of the
bone, status of developing teeth, monitor tooth health
rectangular collimation
exposes tissue 60% less than a round PID
E-speed and F-speed films
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
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SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
SCDA Radiation Safety Test Study Guide
What are X-rays?
A form of electromagnetic radiation that pass through the human body to
produce images of bone/teeth/nerves
A licensed X-ray employer must
take all precautions necessary to provide protection to all individuals
exposed to radiation
Radiographs are used to
help a dentist prevent, monitor and diagnose potential health issues in a
patient's mouth
X-rays are
invisible beans that pass through soft tissue and are absorbed by dense
tissue to produce detailed images
Radiation can
Affect body tissues and cells that can carry hereditary materials for future
generations
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
Page 1 of 19 #$%$%$^$@**#&^#*&&%(%%^&*()
10/31/2026, 3:43:45 AM #$%$%$^$@**#&^#*&&%(%%^&*()
,SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
Page 2 of 19 #$%$%$^$@**#&^#*&&%(%%^&*()
SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
Intraoral X-rays
are the most common type of x-ray, they give a high level of detail of the
tooth, bone and supporting tissues of the mouth.
Adult issues detected by x-rays
areas of decay, damages in filings, possible dental/periodontal disease,
infection or nerve death, place or plan bone for implants
Child and teen issues detected by x-rays
find decay, monitor tooth growth and development, determine if permanent
teeth are coming in properly, help plan braces
NCRP
National Committee on Radiation Protection
The NCRP has
established acceptable levels of ionizing radiation exposure
MPD
maximum permissible dose
The MPD is
radiation doses recommended for the general population, occupational
worker and pregnant person
Occupational radiation limit for adults
5 rem (0.05Sv), and 10% of that for minors
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
Page 2 of 19 #$%$%$^$@**#&^#*&&%(%%^&*()
10/31/2026, 3:43:45 AM #$%$%$^$@**#&^#*&&%(%%^&*()
, SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
Page 3 of 19 #$%$%$^$@**#&^#*&&%(%%^&*()
SCDA Radiation Safety Test Study Guide #$%$%$^$@**#&^#*&&%(%%^&*()
Radiation dose is
a measure of how much energy is absorbed when something is exposed to
x-rays
Effective dose
dose estimated at the skin surface and used to directly infer radiation
associated risk, expressed in millisievert (mSv).
Effective doses are
intraoral dental x-ray imaging (1-8 uSv), Panoramic (4-30 uSv),
Cephalometric (2-3 uSv) and CBCT (dento-alveolar 34-652 uSv or
craniofacial 30-1079 uSv)
Total effective dose equivalent
to individual members of the public does not exceed .01 mSv
Fetal dose
0.3 mSv
Intraoral radiographs
the most common type, used to find cavities, tooth roots, health of the
bone, status of developing teeth, monitor tooth health
rectangular collimation
exposes tissue 60% less than a round PID
E-speed and F-speed films
SCDA Radiation Safety Test Study Guide.pdf #$%$%$^$@**#&^#*&&%(%%^&*()
Page 3 of 19 #$%$%$^$@**#&^#*&&%(%%^&*()
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