TCDHA RADIOGRAPHY FINAL
REVIEW EXAM UPDATED
2026/2027 QUESTIONS WITH
ANSWERS
1. Radiation is defined as - Answer✔️a form of energy carried by waves or streams of
particles
2. A radiograph is defined as - Answer✔️a picture on film produced by the passage of x-
rays through an object or body
3. Why are dental images important - Answer✔️many dental diseases are typically
discovered only through the use of dental images
4. Who modified the paralleling technique with the introduction of the long-cone technique
- Answer✔️f. Gordon Fitzgerald
5. Which of the following would you place in the patients mouth in order to take dental x-
rays - Answer✔️image receptor
6. The orbiting shell closest to the nucleus has the highest energy level - Answer✔️true
7. The binding energy or binding force of an electron is - Answer✔️determined by the
distance between the orbiting electrons and the nucleus
8. Ionization - Answer✔️an atom that gains an electron has a negative charge, and an atom
that loses an electron has a positive charge
9. Ionizing radiation - Answer✔️radiation that is capable of producing ions by removing or
adding an electron to an atom
10. Heat is a byproduct of x-ray production. Which component of the x-ray tube head
dissipates the heat created by the production of x-rays? - Answer✔️insulation oil
11. The head collimator - Answer✔️restricts the size of the x-ray beam
12. Which would you adjust if you wanted to create a larger electron cloud - Answer✔️ma
13. In dental radiography, the term ..........answer Is used to describe the mean energy or
penetrating ability of the x-ray beam - Answer✔️quality
, (1) density is the overall darkness or blackness of a dental image (2) when the
kilovoltage is increased while other exposure factors rain constant, the
resultant image exhibits a decreased density and appears lighter - first
statement is true; the second statement is false
14. Ma regulates the ........... Of electrons produced at the cathode filament -
Answer✔️quantity
15. According to the inverse square law, if the length of the pid is halved, the resultant beam
............. As intense - Answer✔️one quarter
(1) as kv, ma, and time increases, x-ray beam intensity decreases (2) as distance
and filtration increase, the intensity of the x-ray beam increase – answer both
statements are false
16. Refers to the total amount of radiation that is received or absorbed - Answer✔️total dose
(1) more radiation damage takes place with high dose rates (2) because a rapid
delivery of radiation does not allow time for cellular damage to be repaired –
Answer both statements are true
17. What should you do prior to taking x-rays to protect your patient from radiation exposure
- Answer✔️proper prescribing of radiographs
18. The thyroid collar - Answer✔️is recommended for all intraoral exposures
19. The lead apron - Answer✔️is recommended for intraoral exposures
20. On some dental x-ray machines, only the .......... Can be altered; the other parameters are
preset by the manufacturer - Answer✔️exposure time
21. A film badge - Answer✔️is worn at waist level by the operator
22. The ........ Allow for positioning of the tube head - Answer✔️extension arm
23. During an exposure - Answer✔️the exposure button is firmly depressed until the preset
exposure time is completed
24. What intraoral receptor holders is a disposable Styrofoam-bite block? - Answer✔️state
bite-block
25. Features of the state bite-block include - Answer✔️a slot for receptor retention
REVIEW EXAM UPDATED
2026/2027 QUESTIONS WITH
ANSWERS
1. Radiation is defined as - Answer✔️a form of energy carried by waves or streams of
particles
2. A radiograph is defined as - Answer✔️a picture on film produced by the passage of x-
rays through an object or body
3. Why are dental images important - Answer✔️many dental diseases are typically
discovered only through the use of dental images
4. Who modified the paralleling technique with the introduction of the long-cone technique
- Answer✔️f. Gordon Fitzgerald
5. Which of the following would you place in the patients mouth in order to take dental x-
rays - Answer✔️image receptor
6. The orbiting shell closest to the nucleus has the highest energy level - Answer✔️true
7. The binding energy or binding force of an electron is - Answer✔️determined by the
distance between the orbiting electrons and the nucleus
8. Ionization - Answer✔️an atom that gains an electron has a negative charge, and an atom
that loses an electron has a positive charge
9. Ionizing radiation - Answer✔️radiation that is capable of producing ions by removing or
adding an electron to an atom
10. Heat is a byproduct of x-ray production. Which component of the x-ray tube head
dissipates the heat created by the production of x-rays? - Answer✔️insulation oil
11. The head collimator - Answer✔️restricts the size of the x-ray beam
12. Which would you adjust if you wanted to create a larger electron cloud - Answer✔️ma
13. In dental radiography, the term ..........answer Is used to describe the mean energy or
penetrating ability of the x-ray beam - Answer✔️quality
, (1) density is the overall darkness or blackness of a dental image (2) when the
kilovoltage is increased while other exposure factors rain constant, the
resultant image exhibits a decreased density and appears lighter - first
statement is true; the second statement is false
14. Ma regulates the ........... Of electrons produced at the cathode filament -
Answer✔️quantity
15. According to the inverse square law, if the length of the pid is halved, the resultant beam
............. As intense - Answer✔️one quarter
(1) as kv, ma, and time increases, x-ray beam intensity decreases (2) as distance
and filtration increase, the intensity of the x-ray beam increase – answer both
statements are false
16. Refers to the total amount of radiation that is received or absorbed - Answer✔️total dose
(1) more radiation damage takes place with high dose rates (2) because a rapid
delivery of radiation does not allow time for cellular damage to be repaired –
Answer both statements are true
17. What should you do prior to taking x-rays to protect your patient from radiation exposure
- Answer✔️proper prescribing of radiographs
18. The thyroid collar - Answer✔️is recommended for all intraoral exposures
19. The lead apron - Answer✔️is recommended for intraoral exposures
20. On some dental x-ray machines, only the .......... Can be altered; the other parameters are
preset by the manufacturer - Answer✔️exposure time
21. A film badge - Answer✔️is worn at waist level by the operator
22. The ........ Allow for positioning of the tube head - Answer✔️extension arm
23. During an exposure - Answer✔️the exposure button is firmly depressed until the preset
exposure time is completed
24. What intraoral receptor holders is a disposable Styrofoam-bite block? - Answer✔️state
bite-block
25. Features of the state bite-block include - Answer✔️a slot for receptor retention
