PRINCIPLES OF GEOTECHNICAL
ENGINEERING EXAM SCRIPT COMPLETE
QUESTIONS AND ANSWERS GRADED A+
●● role of the Iowa Dental Board
Answer: ensures that dental assistants meet minimum training standards;
issues qualification in dental radiography
●● under what conditions can a dental assistant take radiographs?
Answer: must have added qualified in dental radiography, dentist must
order films, dentist must provide supervision
●● under what conditions can a dental assistant trainee take
radiographs?
Answer: dentist must order films and provide personal supervision
●● what three things are required to obtain radiography qualification
from the board?
Answer: course of study that includes clinical training, exam, and an
application fee
●● When is the radiography qualification renewed? What are the
renewal requirements?
,Answer: renewed when registration is renewed by aug 31 of odd years
●● what are the renewal requirements for dental radiography?
Answer: proof of 2 hours of continuing education in dental radiography
and renewal fee
●● name 2 possible penalties for violating dental radiography
requirments
Answer: disciplinary action by the dental board. criminal charges or civil
action
●● T/F: A dentist should always prescribe radiographs every six months
to review a patient's dental condition.
Answer: false
●● T/F: A certified dental assistant does not need to obtain a separate
radiography qualification from the Board to take x-rays.
Answer: false
●● T/F: Dental assistant trainees can train in dental radiography during
the trainee period.
Answer: true
●● T/F: The Iowa Dental Board inspects dental radiography machines.
,Answer: false
●● control panel
Answer: houses the adjustable components of the x-ray machine
(mA,kVp,and timer)
●● Tube head
Answer: houses the mechanical, electrical, and safety components that
are used to create x-rays
●● extension (support) arm
Answer: allows for placement of position indicating device and houses
electrical cords that connect the control panel and tube head
●● Position indicating device (PID)
Answer: Aims and shapes the x-ray beam
●● Collimator
Answer: at the base of the PID. Is a lead washer that restricts the size of
the x ray beam
●● milliammeter (mA)
Answer: determines the number of electros available to produce x-rays
, 7-15mA (an increase in the mA increases the number of electrons)
●● kVp selector
Answer: determines the force at which electrons move. (the more force
during movement, the greater the force when free e- are stopped)
determines the quality
●● timer
Answer: Determines how long the current passes through the x-ray tube
May be set in fractions of a second: impulses
Impulses: 60 impulses to a second
●● short scale contrast
Answer: A film radiograph with few densities but great differences
among them is said to have high contrast
●● Long scale contrast
Answer: Low-contrast image. A radiographic image with many shades
of gray. Produced with high kilovoltage.
●● detail
Answer: refers to how sharp the outline of structures on a radiograph is
ENGINEERING EXAM SCRIPT COMPLETE
QUESTIONS AND ANSWERS GRADED A+
●● role of the Iowa Dental Board
Answer: ensures that dental assistants meet minimum training standards;
issues qualification in dental radiography
●● under what conditions can a dental assistant take radiographs?
Answer: must have added qualified in dental radiography, dentist must
order films, dentist must provide supervision
●● under what conditions can a dental assistant trainee take
radiographs?
Answer: dentist must order films and provide personal supervision
●● what three things are required to obtain radiography qualification
from the board?
Answer: course of study that includes clinical training, exam, and an
application fee
●● When is the radiography qualification renewed? What are the
renewal requirements?
,Answer: renewed when registration is renewed by aug 31 of odd years
●● what are the renewal requirements for dental radiography?
Answer: proof of 2 hours of continuing education in dental radiography
and renewal fee
●● name 2 possible penalties for violating dental radiography
requirments
Answer: disciplinary action by the dental board. criminal charges or civil
action
●● T/F: A dentist should always prescribe radiographs every six months
to review a patient's dental condition.
Answer: false
●● T/F: A certified dental assistant does not need to obtain a separate
radiography qualification from the Board to take x-rays.
Answer: false
●● T/F: Dental assistant trainees can train in dental radiography during
the trainee period.
Answer: true
●● T/F: The Iowa Dental Board inspects dental radiography machines.
,Answer: false
●● control panel
Answer: houses the adjustable components of the x-ray machine
(mA,kVp,and timer)
●● Tube head
Answer: houses the mechanical, electrical, and safety components that
are used to create x-rays
●● extension (support) arm
Answer: allows for placement of position indicating device and houses
electrical cords that connect the control panel and tube head
●● Position indicating device (PID)
Answer: Aims and shapes the x-ray beam
●● Collimator
Answer: at the base of the PID. Is a lead washer that restricts the size of
the x ray beam
●● milliammeter (mA)
Answer: determines the number of electros available to produce x-rays
, 7-15mA (an increase in the mA increases the number of electrons)
●● kVp selector
Answer: determines the force at which electrons move. (the more force
during movement, the greater the force when free e- are stopped)
determines the quality
●● timer
Answer: Determines how long the current passes through the x-ray tube
May be set in fractions of a second: impulses
Impulses: 60 impulses to a second
●● short scale contrast
Answer: A film radiograph with few densities but great differences
among them is said to have high contrast
●● Long scale contrast
Answer: Low-contrast image. A radiographic image with many shades
of gray. Produced with high kilovoltage.
●● detail
Answer: refers to how sharp the outline of structures on a radiograph is
