RADIATION HEALTH AND SAFETY
PRACTICE CERTIFICATION PAPER 2026
FULL SOLUTION GRADED A+
●● a bitewing radiograph is useful in diagnosing all of the following
EXCEPT:
a. impacted tooth
b. tooth decay
c. periodontal disease
d. gum disease. Answer: a. impacted tooth
●● a full-mouth survey generally includes:
a. 14 periapical views and 4-6 bitewings
b. 10 periapical views and 8 bitewings
c. 14 periapical views and 4-6 bitewings and a panoramic
d. 8 periapical views and 4 bitewings. Answer: a. 14 periapical views
and 4-6 bitewings
●● the best radiograph to obtain for diagnosis of temporomandibular
joint (TMJ) is:
,a. panoramic
b. periapical
c. sialography
d. arthography. Answer: d. arthography
(takes x- rays of the actual joint)
●● what type of radiograph is used by an orthodontist to assist with
treatment planning?
a. tomography
b. sialography
c. cephalometric
d. occlusal. Answer: c. cephalometric
●● which of the following is a true statement regarding the use of lead
aprons and thyroid collars?
a. the use of lead aprons and thyroid collars will prevent cancer from
developing in the thyroid gland.
b. the apron should cover from the neck to just above the patient's knees.
c. lead aprons should be cleaned thoroughly and folded in thirds between
patient use.
, d. the thyroid collar is optional for older adults past childbearing years.
Answer: b. the apron should cover from the neck to just above the
patients knees
●● where is the most appropriate place to store dental film?
a. in a cool, dry closet
b. in a refrigerator
c. in the treatment room
d. near the x-ray machine. Answer: a. in a cool, dry closet
●● a dental assistant experiences an occupational exposure. a patient's
blood has splashed into the employee's eye. which of the following is an
appropriate step to take?
a. immediately draw blood from the patient in order to get it tested for
HIV and HBV
b. require the employee to have their own blood tested immediately for
HIV and HBV
c. document the incident, including the source individual, the employee,
route of exposure, and how it happened
d. check the patients chart and determine if risk factors are present to
warrant further testing for the employee. Answer: c. document the
incident, including the source individual, the employee, route of
exposure, and how it happened
PRACTICE CERTIFICATION PAPER 2026
FULL SOLUTION GRADED A+
●● a bitewing radiograph is useful in diagnosing all of the following
EXCEPT:
a. impacted tooth
b. tooth decay
c. periodontal disease
d. gum disease. Answer: a. impacted tooth
●● a full-mouth survey generally includes:
a. 14 periapical views and 4-6 bitewings
b. 10 periapical views and 8 bitewings
c. 14 periapical views and 4-6 bitewings and a panoramic
d. 8 periapical views and 4 bitewings. Answer: a. 14 periapical views
and 4-6 bitewings
●● the best radiograph to obtain for diagnosis of temporomandibular
joint (TMJ) is:
,a. panoramic
b. periapical
c. sialography
d. arthography. Answer: d. arthography
(takes x- rays of the actual joint)
●● what type of radiograph is used by an orthodontist to assist with
treatment planning?
a. tomography
b. sialography
c. cephalometric
d. occlusal. Answer: c. cephalometric
●● which of the following is a true statement regarding the use of lead
aprons and thyroid collars?
a. the use of lead aprons and thyroid collars will prevent cancer from
developing in the thyroid gland.
b. the apron should cover from the neck to just above the patient's knees.
c. lead aprons should be cleaned thoroughly and folded in thirds between
patient use.
, d. the thyroid collar is optional for older adults past childbearing years.
Answer: b. the apron should cover from the neck to just above the
patients knees
●● where is the most appropriate place to store dental film?
a. in a cool, dry closet
b. in a refrigerator
c. in the treatment room
d. near the x-ray machine. Answer: a. in a cool, dry closet
●● a dental assistant experiences an occupational exposure. a patient's
blood has splashed into the employee's eye. which of the following is an
appropriate step to take?
a. immediately draw blood from the patient in order to get it tested for
HIV and HBV
b. require the employee to have their own blood tested immediately for
HIV and HBV
c. document the incident, including the source individual, the employee,
route of exposure, and how it happened
d. check the patients chart and determine if risk factors are present to
warrant further testing for the employee. Answer: c. document the
incident, including the source individual, the employee, route of
exposure, and how it happened
