TEST BANK For Dental Radiography:
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Principles and Techniques 6th Edition
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by Joen Iannucci & Laura Jansen Howerton
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Chapters 1 - 35 | CompleteIIll IIll IIll IIll IIll IIll
,Chapter 01: Radiation History
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Iannucci: Dental Radiography, 6th Edition
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MULTIPLE CHOICE IIll
1. Radiation is defined as IIll IIll IIll
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
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IIll imageshadows on a receptor. Il IIll IIll IIll
c. a high-energy radiation produced by the collision of a beam of electrons
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IIll with ametal target in an x-ray tube. IIll Il IIll IIll IIll IIll IIll
d. a branch of medicine that deals with the use of x-rays.
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ANSWER: A IIll
Radiation is a form of energy carried by waves or streams of particles. An x-ray is a
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beam ofenergy that has the power to penetrate substances and record image shadows on
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a receptor.
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X-radiation is a high-energy radiation produced by the collision of a beam of electrons IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
with ametal target in an x-ray tube. Radiology is a branch of medicine that deals with
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the use of
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x-rays.
DIF: Recall REF: Page 2 OBJ: 1 IIll IIll IIll IIll I I l l
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, 2.1 Principles of
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radiophysicsand radiobiology
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2. A radiograph is defined as
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a. a beam of energy that has the power to penetrate substances and record
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IIll imageshadows on a receptor. Il IIll IIll IIll
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
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receptor tox-rays.
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d. a form of energy carried by waves or a stream of particles.
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ANSWER: B IIll
An x-ray is a beam of energy that has the power to penetrate substances and record
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image shadows on a receptor. A radiograph is a picture on film produced by the
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passage of x-rays through an object or body. Radiography is the art and science of
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making dental images by theexposure of a receptor to x-rays.
IIll IIll Radiation is a form of IIll IIll IIll Il IIll IIll IIll IIll IIll I I l l IIll IIll IIll IIll
energy carried by waves or streams of particles.
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DIF: Comprehension REF: Page 2 OBJ: IIll IIll IIll IIll
1TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
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radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of
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radiophysicsand radiobiology
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3. Your patient asked you why dental images are important. Which of the following
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is thecorrect response?
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a. An oral examination with dental images limits the practitioner to what is
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seenclinically.
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b. All dental diseases and conditions produce clinical signs and symptoms.
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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
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IIll dentalimages. Il
ANSWER: D IIll
An oral examination without dental images limits the practitioner to what is seen clinically.
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Many dental diseases and conditions produce no clinical signs and symptoms. Dental
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imagesare a necessary component of comprehensive patient care. Many dental diseases are
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typically discovered only through the use of dental images.
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DIF: Application REF: Page 2 OBJ: 2 IIll IIll IIll IIll I I l l
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 IIll
b. Wilhelm Roentgen IIll
c. Johann Hittorf IIll
d. William Crookes IIll
ANSWER: B IIll
Heinrich Geissler built the first vacuum tube in 1838.
IIll Wilhelm Roentgen discovered the IIll IIll IIll IIll IIll IIll IIll I I l l IIll IIll IIll
x-ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges emitted
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from the negative electrode of a vacuum tube traveled in straight lines, produced heat,
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and resultedin a greenish fluorescence. William Crookes discovered in the late 1870s
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that cathode rays were streams of charged particles.
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DIF: Recall REF: Page 2 OBJ: 4 IIll IIll IIll IIll I I l l
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 IIll
b. Wilhelm Roentgen IIll
c. Edmund Kells IIll
d. Weston Price IIll
ANSWER: I I l l C
Otto Walkoff was a German dentist who made the first dental radiograph. Wilhelm
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Roentgenwas a Bavarian physicist who discovered the x-ray. Edmund Kells exposed the
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first dental radiograph in the United States using a live person. Price introduced the
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bisecting technique in 1904.
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DIF: Recall REF: Page 4 OBJ: 5 IIll IIll IIll IIll I I l l
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 IIll IIll IIll IIll % less exposure time than the initial
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exposuretimes used in 1920.
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a. 33
b. 98
c. 73
, d. 2
ANSWER: D IIll
Current fast radiographic film requires 98% less exposure time than the initial exposure
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timesused in 1920.
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DIF: Comprehension REF: Page 5 OBJ: IIll IIll IIll IIll
6TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
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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 IIll IIll
b. Franklin W. McCormack IIll IIll
c. F. Gordon Fitzgerald IIll IIll
d. Howard Riley Raper IIll IIll
ANSWER: C IIll
C. Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack
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reintroduced the paralleling technique in 1920. F. Gordon Fitzgerald modified the
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parallelingtechnique with the introduction of the long-cone technique. This is the
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technique currently used. Howard Riley Raper modified the bisecting technique and
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introduced the bite-wing technique in 1925.
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DIF: Recall REF: Page 4 OBJ: 7 IIll IIll IIll IIll I I l l
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 IIll IIll IIll
b. Increased patient comfort IIll IIll
c. Increased speed for viewing images IIll IIll IIll IIll
d. Increased chemical usage IIll IIll
ANSWER: C IIll
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
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image from digital sensors is uploaded directly to the computer and monitor without the
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need for chemical processing. This allows for immediate interpretation and evaluation.
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The image fromdigital sensors is uploaded directly to the computer and monitor without
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the need for chemicalprocessing.
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DIF: Comprehension REF: Page 6 OBJ: 7 IIll IIll IIll IIll IIll
TOP: CDA, RHS, I.B.2. Demonstrate basic knowledge of digital
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radiography
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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 IIll
b. Alpha particles IIll
c. Cathode rays IIll
d. Radioactive materials IIll
ANSWER: C IIll
