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Dental Radiology Final Exam Review EXAM
fully solved & updated 2025-2026(latest
version verified for accuracy) (Questions +
Answers) Solved 100% Correct!!
A photographic image produced on film by the passage of x-
rays through teeth and related structures Ans: radiograph,
dental
A beam of energy that has the power to penetrate substances
and record image shadows on photographic film. Ans: x ray
A form of energy carried by waves or a stream of particles Ans:
radiation
Any person who positions, exposes, and processes x-ray film
Ans: radiographer, dental
The making of radiographs by the exposure of film to x-rays
Ans: radiography
A high-energy radiation produced by the collision of a beam of
electrons with a metal target in an x-ray tube Ans: radiation
The science or study of radiations as used in medicine. Ans:
radiology
The making of radiographs of the teeth and adjacent structures
by the exposure of film to x-rays Ans: radiography, dental
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A picture on film produced by the passage of x-rays through an
object or body. Ans: radiograph
Coolidge Ans: developed first x ray tube
Fitzgerald Ans: Introduced long-cone paralleling technique
Kells Ans: exposed first radiograph in united states with live
patients
McCormack Ans: Used paralleling technique in practical dental
radiography
Roentgen Ans: discovered x rays
Walkhoff Ans: exposed first dental radiograph
Which of the following electrons has the greatest binding
energy? Ans: K shell electrons
the K shell electron is located closest to the nucleus and has the
highest energy level and the greatest binding energy. The M, N,
and L shell electrons are located farther from the nucleus.
What type of electrical charge does the electron carry? Ans:
negative charge
Which term describes two or more atoms that are joined by
chemical bonds? Ans: molecule
Which of the following describes ionization? Ans: Ionization is
described as the production of ions when an atom loses an
electron
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Which term describes the process by which unstable atoms
undergo a spontaneous disintegration in an effort to attain a
more balance nuclear state? Ans: radioactivity
Which of the following is NOT a type of particulate radiation?
Ans: nucleons
Which of the following is NOT a type of electromagnetic
radiation? Ans: electrons
Which of the following is a CORRECT statement? Ans: x-rays
have more energy than visible light
Which of the following regulates the flow of electrical current to
the filament of Ans: low-voltage circuit
Which of the following is used to increase the voltage in the
high-voltage circuit? Ans: step-up transformer
The transformers either increase or decrease the voltage in an
electrical circuit; the step-up transformer increases the
incoming voltage to the level required.
Which of the following is the location in which x-rays are
produced? Ans: . positive anode
X-rays are produced at the anode that is the positive electrode
inside the x-ray tube.
Which of the following is the location in which thermionic
emission occurs? Ans: negative cathode
Thermionic emission occurs at the cathode that is the negative
electrode inside the x-ray tube.
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Which of the following accounts for 70% of all the x-ray energy
produced at the anode? Ans: general radiation
Which of the following occurs only at 70 kVp or higher and
accounts for a very small part of the x-rays produced in the
dental x-ray machine? Ans: characteristic radiation
Which of the following describes primary radiation? Ans:
radiation that exits the tubehead
Which of the following describes scatter radiation? Ans:
radiation that has been deflected from its path by interaction
with matter.
Radiation that has been deflected from its path by the
interaction with matter is scatter radiation.
Which of the following type of scatter occurs most often with
dental x-rays? Ans: compton
In dental radiography, the quality of the x-ray beam is
controlled by: Ans: kVp
Identify the kilovoltage range for most dental x-ray machines:
Ans: 65-100 kV
The average range for most dental x-ray machines is 65-100kV.
Lower settings may not penetrate the tissue adequately and
cause high contrast images; higher settings increase the
radiation the patient receives and cause low contrast images.
A higher kilovoltage produces x-rays with: Ans: greater energy
levels
Dental Radiology Final Exam Review EXAM
fully solved & updated 2025-2026(latest
version verified for accuracy) (Questions +
Answers) Solved 100% Correct!!
A photographic image produced on film by the passage of x-
rays through teeth and related structures Ans: radiograph,
dental
A beam of energy that has the power to penetrate substances
and record image shadows on photographic film. Ans: x ray
A form of energy carried by waves or a stream of particles Ans:
radiation
Any person who positions, exposes, and processes x-ray film
Ans: radiographer, dental
The making of radiographs by the exposure of film to x-rays
Ans: radiography
A high-energy radiation produced by the collision of a beam of
electrons with a metal target in an x-ray tube Ans: radiation
The science or study of radiations as used in medicine. Ans:
radiology
The making of radiographs of the teeth and adjacent structures
by the exposure of film to x-rays Ans: radiography, dental
, Page | 2
A picture on film produced by the passage of x-rays through an
object or body. Ans: radiograph
Coolidge Ans: developed first x ray tube
Fitzgerald Ans: Introduced long-cone paralleling technique
Kells Ans: exposed first radiograph in united states with live
patients
McCormack Ans: Used paralleling technique in practical dental
radiography
Roentgen Ans: discovered x rays
Walkhoff Ans: exposed first dental radiograph
Which of the following electrons has the greatest binding
energy? Ans: K shell electrons
the K shell electron is located closest to the nucleus and has the
highest energy level and the greatest binding energy. The M, N,
and L shell electrons are located farther from the nucleus.
What type of electrical charge does the electron carry? Ans:
negative charge
Which term describes two or more atoms that are joined by
chemical bonds? Ans: molecule
Which of the following describes ionization? Ans: Ionization is
described as the production of ions when an atom loses an
electron
, Page | 3
Which term describes the process by which unstable atoms
undergo a spontaneous disintegration in an effort to attain a
more balance nuclear state? Ans: radioactivity
Which of the following is NOT a type of particulate radiation?
Ans: nucleons
Which of the following is NOT a type of electromagnetic
radiation? Ans: electrons
Which of the following is a CORRECT statement? Ans: x-rays
have more energy than visible light
Which of the following regulates the flow of electrical current to
the filament of Ans: low-voltage circuit
Which of the following is used to increase the voltage in the
high-voltage circuit? Ans: step-up transformer
The transformers either increase or decrease the voltage in an
electrical circuit; the step-up transformer increases the
incoming voltage to the level required.
Which of the following is the location in which x-rays are
produced? Ans: . positive anode
X-rays are produced at the anode that is the positive electrode
inside the x-ray tube.
Which of the following is the location in which thermionic
emission occurs? Ans: negative cathode
Thermionic emission occurs at the cathode that is the negative
electrode inside the x-ray tube.
, Page | 4
Which of the following accounts for 70% of all the x-ray energy
produced at the anode? Ans: general radiation
Which of the following occurs only at 70 kVp or higher and
accounts for a very small part of the x-rays produced in the
dental x-ray machine? Ans: characteristic radiation
Which of the following describes primary radiation? Ans:
radiation that exits the tubehead
Which of the following describes scatter radiation? Ans:
radiation that has been deflected from its path by interaction
with matter.
Radiation that has been deflected from its path by the
interaction with matter is scatter radiation.
Which of the following type of scatter occurs most often with
dental x-rays? Ans: compton
In dental radiography, the quality of the x-ray beam is
controlled by: Ans: kVp
Identify the kilovoltage range for most dental x-ray machines:
Ans: 65-100 kV
The average range for most dental x-ray machines is 65-100kV.
Lower settings may not penetrate the tissue adequately and
cause high contrast images; higher settings increase the
radiation the patient receives and cause low contrast images.
A higher kilovoltage produces x-rays with: Ans: greater energy
levels
