Test Bank on Essentials of Dental Radiography 9th EditionBy Evelyn Thomson,Orlen Johnson

Test Bank on Essentials of Dental Radiography 9th EditionBy Evelyn Thomson,Orlen JohnsonContents Chapter 1 ............................................................................................................................................................... 2 Chapter 2 ...............................................................................................................................................................11 Chapter 3 .............................................................................................................................................................. 19 Chapter 4 ............................................................................................................................................................. 28 Chapter 5 ............................................................................................................................................................. 36 Chapter 6 ............................................................................................................................................................. 45 Chapter 7 ............................................................................................................................................................. 54 Chapter 8 ............................................................................................................................................................. 63 Chapter 9 .............................................................................................................................................................. 71 Chapter 10 ........................................................................................................................................................... 79 Chapter 11 ............................................................................................................................................................ 88 Chapter 12 ........................................................................................................................................................... 97 Chapter 13 ......................................................................................................................................................... 106 Chapter 14 .......................................................................................................................................................... 115 Chapter 15 ......................................................................................................................................................... 124 Chapter 16 ......................................................................................................................................................... 134 Chapter 17 ......................................................................................................................................................... 143 Chapter 18 ......................................................................................................................................................... 153 Chapter 19 .......................................................................................................................................................... 161 Chapter 20 ......................................................................................................................................................... 170 Chapter 21 .......................................................................................................................................................... 179 Chapter 22 ........................................................................................................................................................ 188 Chapter 23 ........................................................................................................................................................ 196 Chapter 24 ........................................................................................................................................................ 205 1 | P a g eChapter 25 ........................................................................................................................................................ 214 Chapter 26 ........................................................................................................................................................ 222 Chapter 27 ........................................................................................................................................................ 231 Chapter 28 ........................................................................................................................................................ 241 Chapter 29 ........................................................................................................................................................ 250 Chapter 30 ........................................................................................................................................................ 258 Chapter 1 Multiple Choice 1. Who was awarded the first Nobel Prize for physics in 1901, for his experimental work with radiation? 2. W. J. Morton 3. O. Walkhof 4. W. D. Coolidge 5. W. C. Roentgen 6. Who is credited with introducing the bitewing radiograph? 7. F. W. McCormack 8. H. R. Raper 9. G. M. Fitzgerald 10. C. E. Kells 11. Who developed the hot cathode ray tube? 2 | P a g e12. W. D. Coolidge 13. W. A. Price 14. H. R. Raper 15. W. H. Rollins 16. The development of radiation protection as a science is credited to: 17. A. Cieszyński. 18. W. D. Coolidge. 19. W. H. Rollins. 20. F. Mouyen. 21. What New Orleans dentist first made practical use of x-rays in the treatment of dental patients? 22. H. R. Raper 23. G. M. Fitzgerald 24. F. Mouyen 25. C. E. Kells 26. Early researchers working in the field of radiography were not aware that continued exposure to x-rays produced accumulations of radiation efects in the body because x- rays are invisible. 27. Both the statement and reason are correct and related. 3 | P a g e28. Both the statement and reason are correct but NOT related. 29. The statement is correct, but the reason is NOT. 30. The statement is NOT correct, but the reason is correct. 31. NEITHER the statement NOR the reason is correct. 32. 7. The most significant advancement in the early days of radiography came in 1913 when W. D. Coolidge: 33. became the first to alert the profession of the dangers of radiation exposure and advocated for the science of radiation protection. 34. exposed a prototype of a dental radiograph, setting the stage for preventive oral health care. 35. developed a variable, high kilovoltage x-ray machine compatible with the paralleling technique. 36. introduced an x-ray tube that allowed for an x-ray output that could be predetermined and accurately controlled. 37. The first dental radiograph was produced using an exposure time of: 38. 0.5 second. 39. 1 minute. 40. 5 minutes. 41. 25 minutes. 42. 1 hour. 43. What component of the dental x-ray machine best limits the size of the x-ray 4 | P a g ebeam to the approximate size of the image receptor? 44. A pointed cone 45. An open round cylinder 46. A rectangular PID 47. A slit collimator 48. Panoramic radiology became popular in the: 49. 1930s. 50. 1940s. 51. 1950s. 52. 1960s. 53. 1970s. 54. Which of the following is NOT true regarding cone beam volumetric imaging? 55. It images a single selected plane of tissues. 56. It is based on computed tomography. 57. It uses less radiation than a panoramic radiograph. 58. It is designed specifically for imaging dental applications. 59. It is purported to become the gold standard for imaging certain oral conditions. 60. Early dental film required long exposure times because: 5 | P a g e61. it was hand-wrapped. 62. the emulsion was only on one side. 63. glass plates were used as the base. 64. the packets were not moisture resistant. 65. Each of the following is an advantage of digital imaging EXCEPT one. Which one is the EXCEPTION? 66. It reduces radiation over film-based radiography. 67. It eliminates the need for the darkroom and processing chemistry. 68. It allows the use of pointed cones without radiation hazards. 69. It avoids the need for disposal of hazardous materials such as lead foils from film packets. 70. It produces enhanced two- and three-dimensional images. 71. The <KT>bisecting technique was the first and earliest radiographic technique for exposing intraoral radiographs because the bisecting technique is based on the rule of isometry. 72. Both the statement and reason are correct and related. 73. Both the statement and reason are correct but NOT related. 74. The statement is correct, but the reason is NOT. 75. The statement is NOT correct, but the reason is correct. 76. NEITHER the statement NOR the reason is correct. 6 | P a g e77. The <KT>parpaparalleling technique is taught in all dental assisting, dental hygiene, and dental schools because it is the technique of choice for imaging intraoral radiographs. 78. Both the statement and reason are correct and related. 79. Both the statement and reason are correct but NOT related. 80. The statement is correct, but the reason is NOT. 81. The statement is NOT correct, but the reason is correct. 82. NEITHER the statement NOR the reason is correct. 83. The rule of isometry is the basis for what dental radiographic technique? 84. Bisecting 85. Paralleling 86. Panoramic 87. Digital 88. Computed tomography 89. Each of the following is a potential use of dental radiographs EXCEPT one. Which one is the EXCEPTION? 90. Diagnosing dental caries 91. Evaluating development of dentition 92. Detecting missing teeth 93. Assessing patient self-care 7 | P a g e94. Evaluating trauma to teeth and supporting bone 18. Producing radiographs of the teeth and/or the oral cavity is called: 19. Radiation producing. 20. Radiology. 21. Roentgenograph. 22. X-raying. 23. Radiography. 24. Dental assistants and dental hygienists meet an important need by providing each of the following EXCEPT one. Which one is the EXEPTION? 25. Exposing radiographs 26. Processing radiographs 27. Mounting radiographs 28. Prescribing radiographs 29. Interpreting radiographs 30. The positioning indicating device (PID) is sometimes called a “cone” because the 8 | P a g ePID of early dental x-ray machines was of a pointed shape. 31. Both the statement and reason are correct and related. 32. Both the statement and reason are correct but NOT related. 33. The statement is correct, but the reason is NOT. 34. The statement is NOT correct, but the reason is correct. 35. NEITHER the statement NOR the reason is correct. True/False 1. William Herbert Rollins was awarded the first Nobel Prize for physics. 2. C. Edmund Kells encouraged the practical use of radiographs in dentistry. 3. The radiographer should help the patient hold the image receptor in place during exposure. 4. In the early 1900s dental patients would have to be sent to hospitals or a physician’s office to have a dental radiograph exposed. 5. Early dental x-ray machines were an electrical hazard. 6. Pointed cones should be used to direct radiation from the x-ray tube to the patient. 7. Dental x-ray film available today is coated with emulsion on both sides. 8. The bisecting technique is the technique of choice for intraoral radiography. 9 | P a g e9. Dental radiography supplements visual and physical examination to provide a quality evaluation of a patient. 10. Digital imaging systems can reduce radiation dosage more than film-based radiography. 11. A radiograph is an image produced by exposure to x-rays. 12. Computed tomography eliminates the use of radiation to produce an image. 13. Digital imaging replaces the conventional dental x-ray machine. 14. The paralleling technique is based on the rule of isometry. 15. The PID is used to direct the useful beam of radiation. 16. X-radiation was discovered when Roentgen was working with a Crookes tube. 17. Roentgen named his discovery the roentgen ray. 18. The x-radiation output of the Crookes tube (named after the English chemist William Crookes) could be predetermined and accurately controlled. 19. Early scientists and researchers working in the field of radiography were not aware that continued exposure produced accumulations of radiation efects in the body. 20. In the early 1900s, it was common practice for the radiographer to help the patient hold the film in place while making the exposure. Short Answer 1. Who first determined that x-rays would play a role in dentistry? 10 | P a g e2. Who is considered to be the first advocate for the science of radiation protection? 3. Who developed the hot cathode ray tube? 4. Which radiograph displays the entire dentition and surrounding structures? 5. What is the technique of choice for intraoral radiography? 6. In dental digital imaging systems, what replaces film? 7. What medical imaging modality records a selected plane of tissues? 8. What is the name of the device that functions to direct the x-ray beam toward the patient? 9. What is the purpose of studying the history of radiography and dental radiography? 10. What are the two techniques for exposing intraoral dental radiographs? Chapter 2 Multiple Choice 1. Each of the following is a form of energy EXCEPT one. Which one is the EXCEPTION? 2. Heat 3. Water 4. Light 11 | P a g e5. X-radiation 6. What is the maximum number of electron shells (energy levels) an atom can have? 7. 1 8. 3 9. 5 10. 7 11. Each of the following is a form of ionizing radiation EXCEPT one. Which one is the EXCEPTION? 12. Cosmic rays 13. X-rays 14. Radio waves 15. Gamma rays 16. Each of the following statements about electromagnetic radiations is true EXCEPT one. Which one is the EXCEPTION? 17. They have a negative electrical charge. 18. They have no mass. 19. They pass through space as particles and in a wave-like motion. 20. They have no weight. 21. Which of the following statements about x-rays is NOT true? 12 | P a g e22. They travel at the speed of light. 23. They are invisible. 24. They have no mass. 25. They travel in convergent lines. 26. Which one of these is NOT a Système International (SI) unit of measurement? 27. Sievert 28. Roentgen 29. Coulombs per kilogram 30. Gray 31. The Système International unit for measuring absorbed dose is the 32. Gray 33. Sievert 34. Rad 35. Rem 36. The greatest exposure to ionizing radiation to the population comes from 37. Medical x-rays 38. Occupational exposure 39. Dental x-rays