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Dental Radiography: Principles and Techniques (6th Edition, 2025, Joen Iannucci & Laura Howerton) — Complete Test Bank with Correct Answers and Rationales

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This complete test bank for Dental Radiography: Principles and Techniques (6th Edition, 2024) by Joen Iannucci and Laura Howerton includes all chapters with verified correct answers and detailed rationales. It covers essential radiographic principles, safety procedures, image interpretation, digital imaging techniques, and patient management. Perfect for dental hygiene and assisting students preparing for exams or clinical competency tests, as well as instructors creating assessments.

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Dental Radiography Principles And Techniques 6th
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Institution
Dental Radiography Principles And Techniques 6th
Course
Dental Radiography Principles And Techniques 6th

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Uploaded on
October 8, 2025
Number of pages
367
Written in
2025/2026
Type
Exam (elaborations)
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Questions & answers

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Test_Bank_For_Dental_Radiography,_Principles_an
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Chapter 01: Radiation Historyru ru ru




MULTIPLE CHOICE ru




1. Radiation is defined as ru ru ru



a. a form of energy carried by waves or streams of particles.
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b. a beam of energy that has the power to penetrate substances and record image s
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hadows on a receptor. ru ru ru



c. a high- ru



energy radiation produced by the collision of a beam of electrons with a metal ta
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rget in an x-ray tube. ru ru ru ru



d. a branch of medicine that deals with the use of x-rays.
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ANS: A rur u



Radiation is a form of energy carried by waves or streams of particles. An x-
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ray is a beam of energy that has the power to penetrate substances and record image shadows
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on a receptor. ru ru



X-radiation is a high- ru ru ru



energy radiation produced by the collision of a beam of electrons with a metal target in an x-
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ray tube. Radiology is a branch of medicine that deals with the use of
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x-rays.

DIF: Recall REF: Page 2 OBJ: 1 rururu ru rurur u



TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
rur u ru ru ru ru ru ru ru



MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics
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uand radiobiology ru




2. A radiograph is defined as
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a. a beam of energy that has the power to penetrate substances and record image
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shadows on a receptor. ru ru ru



b. a picture on film produced by the passage of x-rays through an object or body.
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c. the art and science of making radiographs by the exposure of an image receptor to x
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-rays.
d. a form of energy carried by waves or a stream of particles.
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ANS: B rur u



An x- ru



ray is a beam of energy that has the power to penetrate substances and record image shadows o
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n a receptor. A radiograph is a picture on film produced by the passage of x-
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rays through an object or body. Radiography is the art and science of making dental images by
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the exposure of a receptor to x-
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rays. Radiation is a form of energy carried by waves or streams of particles.
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DIF: Comprehension REF: Page 2 rururu ru



OBJ: 1 TOP: CDA, RHS, III.B.2. Describe the characteristics of rurur u ru rur u ru ru ru ru ru ru ru



x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics
r u ru ru ru ru ru ru ru ru ru ru ru r



uand radiobiology ru




3. Your patient asked you why dental images are important. Which of the following is the c
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orrect response? ru



a. An oral examination with dental images limits the practitioner to what is seen c
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linically.
b. All dental diseases and conditions produce clinical signs and symptoms.
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The Marketplace to Buy and Sell your Study Material
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c. Dental images are not a necessary component of comprehensive patient care.
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d. Many dental diseases are typically discovered only through the use of dental i
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mages.
ANS: D rur u



An oral examination without dental images limits the practitioner to what is seen clinically. Ma
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ny dental diseases and conditions produce no clinical signs and symptoms. Dental images are
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a necessary component of comprehensive patient care. Many dental diseases are typically disco
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vered only through the use of dental images.
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DIF: Application REF: Page 2 OBJ: 2 rururu ru rurur u



TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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4. The x-ray was discovered by
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a. Heinrich Geissler ru



b. Wilhelm Roentgen ru



c. Johann Hittorf ru



d. William Crookes ru




ANS: B rur u



Heinrich Geissler built the first vacuum tube in 1838. Wilhelm Roentgen discovered the
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x-
ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges emitted from the n
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egative electrode of a vacuum tube traveled in straight lines, produced heat, and resulted in a gr
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eenish fluorescence. William Crookes discovered in the late 1870s that cathode rays were strea
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ms of charged particles.
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DIF: Recall REF: Page 2 OBJ: 4 rururu ru rurur u



TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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5. Who exposed the first dental radiograph in the United States using a live person?
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a. Otto Walkoff ru



b. Wilhelm Roentgen ru



c. Edmund Kells ru



d. Weston Price ru




ANS: C rur u



Otto Walkoff was a German dentist who made the first dental radiograph. Wilhelm Roentgen
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was a Bavarian physicist who discovered the x-
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ray. Edmund Kells exposed the first dental radiograph in the United States using a live person.
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Price introduced the bisecting technique in 1904.
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DIF: Recall REF: Page 4 OBJ: 5 rururu ru rurur u



TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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6. Current fast radiographic film requires ru ru ru ru



% less exposure time than the initial exposure times used in 1920.
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a. 33
b. 98
c. 73




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d. 2 rurur u




ANS: D rur u



Current fast radiographic film requires 98% less exposure time than the initial exposure times
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used in 1920. ru ru




DIF: Comprehension REF: Page 5 rururu ru



OBJ: 6 TOP: CDA, RHS, III.B.2. Describe the characteristics of rurur u ru rur u ru ru ru ru ru ru ru



x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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7. Who modified the paralleling technique with the introduction of the long-cone technique?
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a. C. Edmund Kells ru ru



b. Franklin W. McCormack ru ru



c. F. Gordon Fitzgerald ru ru



d. Howard Riley Raper ru ru




ANS: C rur u



C. Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack reintr
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oduced the paralleling technique in 1920. F. Gordon Fitzgerald modified the paralleling techni
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que with the introduction of the long-
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cone technique. This is the technique currently used. Howard Riley Raper modified the bisectin
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g technique and introduced the bite-wing technique in 1925.
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DIF: Recall REF: Page 4 OBJ: 7 rururu ru rurur u



TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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8. Which of the following is an advantage of digital imaging?
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a. Increased patient radiation exposure ru ru ru



b. Increased patient comfort ru ru



c. Increased speed for viewing images ru ru ru ru



d. Increased chemical usage ru ru




ANS: C rur u



Patient exposure is reduced with digital imaging. Digital sensors are more sensitive to x-
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rays than film. Digital sensors are rigid and bulky, causing decreased patient comfort. The imag
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e from digital sensors is uploaded directly to the computer and monitor without the need for c
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hemical processing. This allows for immediate interpretation and evaluation. The image from
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digital sensors is uploaded directly to the computer and monitor without the need for chemical p
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rocessing.

DIF: Comprehension REF: Page 6 rururu ru



OBJ: 7 TOP: CDA, RHS, I.B.2. Demonstrate basic knowledge of di rurur u r u rur u ru ru ru ru ru ru ru



gital radiography ru



MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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9. Which discovery was the precursor to the discovery of x-rays?
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a. Beta particles ru



b. Alpha particles ru



c. Cathode rays ru



d. Radioactive materials ru




ANS: C rur u




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