IOWA DENTAL BOARD RADIOGRAPHY ACTUAL
EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉Under what conditions can a dental assistant take radiographs?
Answer: Assistant must have added qualified in dental radiography or be
on trainee status
Dentist must order the films
Dentist must provide supervision
◉Under what conditions can a dental assistant trainee take radiographs?
Answer: Dentist must order films
Dentist must provide personal supervision of trainee
◉What three things are required to obtain radiography qualification
from the Board? Answer: Course of study that includes clinical training,
examination, and an application with fee
◉When is the radiography qualification renewed? What are the renewal
requirements? Answer: Renewed with registration is renewed - by
August 31 of odd-numbered years
,◉What are the renewal requirements for dental radiography? Answer:
Renewal requires proof of 2 hours of continuing education in dental
radiography and renewal fee
◉Name two possible penalties for violating dental radiography
requirements. Answer: Disciplinary action by the dental board
Criminal charges or civil action
◉A dentist should always prescribe radiographs every six months to
review a patient's dental condition. Answer: False
◉A certified dental assistant does not need to obtain a separate
radiography qualification from the Board to take x-rays. Answer: False
◉Dental assistant trainees can train in dental radiography during the
trainee period. Answer: True
◉The Iowa Dental Board inspects dental radiography machines.
Answer: False
◉What are the parts of the control panel? What is the function of each
part? Answer: Timer: controls how long electrons move-length of
exposure
mA setting: determines the number of electrons available
, kVp setting: determines the force of electron movement
◉A source of electrons is needed to create x-rays. What else is needed to
create x-rays? Answer: Motion to the electrons
Something to stop the electrons
◉What determines the number of electrons that will be used? Answer:
mA and time
◉What role does kinetic energy play in the creation of x-rays? Answer:
Electrons in motion possess kinetic energy; Kinetic energy from
electrons in motion is converted into heat and x-rays when the electrons
are stopped
◉What does the force of electron movement have to do with the x-rays
that are created? Answer: Force of movement determines force of x-ray
The greater the movement force, the more powerful the x-rays
◉Which x-ray has more penetrating power, one that was created with a
kVp of 60 or an x-ray that was created with a kVp of 80? Answer: 80
kVp
◉What is the function of the PID? Answer: Aim the central rays - used
to aim the x-rays
EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉Under what conditions can a dental assistant take radiographs?
Answer: Assistant must have added qualified in dental radiography or be
on trainee status
Dentist must order the films
Dentist must provide supervision
◉Under what conditions can a dental assistant trainee take radiographs?
Answer: Dentist must order films
Dentist must provide personal supervision of trainee
◉What three things are required to obtain radiography qualification
from the Board? Answer: Course of study that includes clinical training,
examination, and an application with fee
◉When is the radiography qualification renewed? What are the renewal
requirements? Answer: Renewed with registration is renewed - by
August 31 of odd-numbered years
,◉What are the renewal requirements for dental radiography? Answer:
Renewal requires proof of 2 hours of continuing education in dental
radiography and renewal fee
◉Name two possible penalties for violating dental radiography
requirements. Answer: Disciplinary action by the dental board
Criminal charges or civil action
◉A dentist should always prescribe radiographs every six months to
review a patient's dental condition. Answer: False
◉A certified dental assistant does not need to obtain a separate
radiography qualification from the Board to take x-rays. Answer: False
◉Dental assistant trainees can train in dental radiography during the
trainee period. Answer: True
◉The Iowa Dental Board inspects dental radiography machines.
Answer: False
◉What are the parts of the control panel? What is the function of each
part? Answer: Timer: controls how long electrons move-length of
exposure
mA setting: determines the number of electrons available
, kVp setting: determines the force of electron movement
◉A source of electrons is needed to create x-rays. What else is needed to
create x-rays? Answer: Motion to the electrons
Something to stop the electrons
◉What determines the number of electrons that will be used? Answer:
mA and time
◉What role does kinetic energy play in the creation of x-rays? Answer:
Electrons in motion possess kinetic energy; Kinetic energy from
electrons in motion is converted into heat and x-rays when the electrons
are stopped
◉What does the force of electron movement have to do with the x-rays
that are created? Answer: Force of movement determines force of x-ray
The greater the movement force, the more powerful the x-rays
◉Which x-ray has more penetrating power, one that was created with a
kVp of 60 or an x-ray that was created with a kVp of 80? Answer: 80
kVp
◉What is the function of the PID? Answer: Aim the central rays - used
to aim the x-rays
