Test Bank for Dental Radiography: Principles and Techniques 5th Edition by Joen Iannucci and Laura Jansen Howerton – 2026 Study Guide

TESTBANKForDentalRadiography:
n n n n n




PrinciplesandTechniques6thEdition
n n n n n




byJoenIannucci &LauraJansenHowerton
n n n n n n n




Chapters1-35|Complete
n n n n n n

,Chapter01: RadiationHistory
n n n




Iannucci:DentalRadiography,6thEdition
n n n n




MULTIPLE CHOICE n




1. Radiation is defined as n n n




a. a form of energycarried bywaves or streams of particles.
n n n n n n n n n n




b. a beam of energythat has the power to penetrate substances and record image
n n n n n n n n n n n n n




shadows on a receptor.
n n n n




c. a high-energy radiation produced by the collision of a beam of electrons with a
n n n n n n n n n n n n n




metal target in an x-raytube.
n n n n n n




d. a branch of medicine that deals with the use of x-rays.
n n n n n n n n n n




ANSWER: A n




Radiation is a form of energy carried by waves or streams of particles. An x-ray is a beam ofenergy
n n n n n n n n n n n n n n n n n n n




that has the power to penetrate substances and record image shadows on a receptor.
n n n n n n n n n n n n n n




X-radiation is a high-energy radiation produced bythe collision of a beam of electrons with ametal n n n n n n n n n n n n n n n n




target in an x-raytube. Radiologyis a branch of medicine that deals with the use of
n n n n n n n n n n n n n n n n n




x-rays.

DIF: Recall REF: Page 2 OBJ: 1 nn n n n




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




MSC: NBDHE, 2.0 Obtainingand InterpretingRadiographs |NBDHE, 2.1 Principles of radiophysicsand
n n n n n n n n n n n n n




radiobiology
n




2. A radiograph is defined as
n n n n




a. a beam of energythat has the power to penetrate substances and record image
n n n n n n n n n n n n n




shadows on a receptor.
n n n n




b. a picture on film produced bythe passage of x-rays through an object or body.
n n n n n n n n n n n n n n




c. the art and science of making radiographs by the exposure of an image receptor tox-
n n n n n n n n n n n n n n n




rays.
d. a form of energy carried bywaves or a stream of particles.
n n n n n n n n n n n




ANSWER: B n




An x-ray is a beam of energy that has the power to penetrate substances and record image
n n n n n n n n n n n n n n n n




shadows on a receptor. A radiograph is a picture on film produced bythe passage of x-rays
n n n n n n n n n n n n n n n n n




through an object or body. Radiographyis the art and science of makingdental images bythe
n n n n n n n n n n n n n n n n n




exposure of a receptor to x-rays. Radiation is a form of energy carried by waves or streams of
n n n n n n n n n n n n n n n n n n




particles.
n




DIF: Comprehension REF: Page 2 OBJ: 1 nn n n n




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




MSC: NBDHE, 2.0 Obtainingand InterpretingRadiographs |NBDHE, 2.1 Principles of radiophysicsand
n n n n n n n n n n n n n




radiobiology
n




3. Your patient asked you why dental images are important. Which of the following is the
n n n n n n n n n n n n n n




correct response?
n n




a. An oral examination with dental images limits the practitioner to what is seen
n n n n n n n n n n n n




clinically. n




b. All dental diseases and conditions produce clinical signs and symptoms.
n n n n n n n n n

, c. Dental images are not a necessarycomponent of comprehensive patient care. n n n n n n n n n n




d. Manydental diseases are typicallydiscovered only through the use of dental
n n n n n n n n n n n




images.
n




ANSWER: D n




An oral examination without dental images limits the practitioner to what is seen clinically. Many
n n n n n n n n n n n n n n




dental diseases and conditions produce no clinical signs and symptoms. Dental imagesare a
n n n n n n n n n n n n n n




necessary component of comprehensive patient care. Many dental diseases are typically
n n n n n n n n n n n




discovered onlythrough the use of dental images.
n n n n n n n n




DIF: Application REF: Page 2 OBJ: 2 nn n n n




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
n n n n n n n n




MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
n n n n n n n n n n




4. The x-ray was discovered by
n n n n




a. Heinrich Geissler n




b. Wilhelm Roentgen n




c. Johann Hittorf n




d. William Crookes n




ANSWER: B n




Heinrich Geissler built the first vacuum tube in 1838. Wilhelm Roentgen discovered the
n n n n n n n n n n n n




x-ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges emitted from the
n n n n n n n n n n n n n n




negative electrode of a vacuum tube traveled in straight lines, produced heat, and resultedin a
n n n n n n n n n n n n n n n n




greenish fluorescence. William Crookes discovered in the late 1870s that cathode rays were
n n n n n n n n n n n n n




streams of charged particles.
n n n n




DIF: Recall REF: Page 2 OBJ: 4 nn n n n




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
n n n n n n n n




MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
n n n n n n n n n n




5. Who exposed the first dental radiograph in the United States using a live person?
n n n n n n n n n n n n n




a. Otto Walkoff n




b. Wilhelm Roentgen n




c. Edmund Kells n




d. Weston Price n




ANSWER: C n




Otto Walkoff was a German dentist who made the first dental radiograph. Wilhelm Roentgenwas a
n n n n n n n n n n n n n n n




Bavarian physicist who discovered the x-ray. Edmund Kells exposed the first dental radiograph in
n n n n n n n n n n n n n n




the United States using a live person. Price introduced the bisecting technique in 1904.
n n n n n n n nnn n n n n n n




DIF: Recall REF: Page 4 OBJ: 5 nn n n n




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
n n n n n n n n




MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
n n n n n n n n n n




6. Current fast radiographic film requires n n n n % less exposure time than the initial exposure
n n n n n n n




times used in 1920.
n n n n




a. 33
b. 98
c. 73

, d. 2

ANSWER: D n




Current fast radiographic film requires 98% less exposure time than the initial exposure times
n n n n n n n n n n n n n




used in 1920.
n n n




DIF: Comprehension REF: Page 5 OBJ: 6 nn n n n




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




MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
n n n n n n n n n n




7. Who modified the parallelingtechnique with the introduction of the long-cone technique?
n n n n n n n n n n n




a. C. Edmund Kells n n




b. Franklin W. McCormack n n




c. F.Gordon Fitzgerald
n n




d. Howard RileyRaper n n




ANSWER: C n




C. Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack
n n n n n n n n n n n




reintroduced the parallelingtechnique in 1920. F. Gordon Fitzgerald modified the paralleling
n n n n n n n n n n n n




technique with the introduction of the long-cone technique. This is the technique currently
n n n n n n n n n n n n n




used. Howard Riley Raper modified the bisecting technique and introduced the bite-wing
n n n n n n n n n n n n




technique in 1925.
n n n




DIF: Recall REF: Page 4 OBJ: 7 nn n n n




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
n n n n n n n n




MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
n n n n n n n n n n




8. Which of the followingis an advantage of digital imaging?
n n n n n n n n n




a. Increased patient radiation exposure n n n




b. Increased patient comfort n n




c. Increased speed for viewing images n n n n




d. Increased chemical usage n n




ANSWER: C n




Patient exposure is reduced with digital imaging. Digital sensors are more sensitive to x-rays than
n n n n n n n n n n n n n n




film. Digital sensors are rigid and bulky, causing decreased patient comfort. The image from digital
n n n n n n n n n n n n n n n




sensors is uploaded directly to the computer and monitor without the need for chemical
n n n n n n n n n n n n n n




processing. This allows for immediate interpretation and evaluation. The image fromdigital
n n n n n n n n n n n n




sensors is uploaded directly to the computer and monitor without the need for chemical
n n n n n n n n n n n n n n




processing.
n




DIF: Comprehension REF: Page 6 OBJ: 7 TOP: nn n n n n




CDA, RHS, I.B.2. Demonstrate basic knowledge of digital radiography
n n n n n n n n n




MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
n n n n n n n n n n




9. Which discovery was the precursor to the discovery of x-rays?
n n n n n n n n n




a. Beta particles n




b. Alpha particles n




c. Cathode rays n




d. Radioactivematerials n




ANSWER: C n