Dental Radiography principals and Techniques 5th edition by Joen Iannucci
Dental Radiography principals and Techniques 5th edition by Joen Iannucci
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Chapter 05: Radiation Protection
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
MULTIPLE CHOICE
| a. | Proper film processing |
| b. | Proper prescribing of radiographs |
| c. | A lead apron |
| d. | A thyroid collar |
ANS: B
Proper film processing is an example of a patient protection technique used after x-ray exposure. Proper prescribing of radiographs is an example of a patient protection technique used before x-ray exposure. A lead apron is an example of a patient protection technique used during x-ray exposure. A thyroid collar is an example of a patient protection technique used during x-ray exposure.
DIF: Application REF: Page 42 OBJ: 2
TOP: CDA, RHS, III.C.3. Identify ways to reduce x-radiation exposure to patients (ALARA)
MSC: NBDHE, 2.2 Principles of radiologic health
| a. | dentulous adult recall patients at increased risk for caries should have posterior bite-wing examinations at 12- to 24-month intervals. |
| b. | x-rays are not taken on patients who are pregnant unless absolutely necessary. |
| c. | edentulous adults should have posterior bite-wing examinations at 12- to 36-month intervals. |
| d. | dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals. |
ANS: D
Dentulous adult recall patients at increased risk for caries should have posterior bite-wing examinations at 6- to 18-month intervals. The recommendations for prescribing radiographs do not need to be altered for pregnancy. Edentulous adults do not need bite-wing radiographs. The “Guidelines for Prescribing Dental Radiographs” state that dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals.
DIF: Recall REF: Page 44 OBJ: 9
TOP: CDA, RHS, III.A. Identify current ADA guidelines for frequency of exposure to radiation
MSC: NBDHE, 2.2 Principles of radiologic health
| a. | includes filtration that takes place when the primary beam passes through the glass window of the x-ray tube, the insulating oil, and the tubehead seal. |
| b. | includes the placement of aluminum discs in the path of the x-ray beam between the collimator and the tubehead seal. |
| c. | alone meets the standards regulated by state and federal law. |
| d. | is equivalent to approximately 5.0 mm of aluminum. |
ANS: A
Inherent filtration in the dental x-ray tubehead includes filtration that takes place when the primary beam passes through the glass window of the x-ray tube, the insulating oil, and the tubehead seal. Added filtration includes the placement of aluminum discs in the path of the x-ray beam between the collimator and the tubehead seal. Inherent filtration alone does not meet the standards regulated by state and federal law. Inherent filtration is equivalent to approximately 0.5 to 1.0 mm of aluminum.
DIF: Recall REF: Page 42 OBJ: 3
TOP: CDA, RHS, III.B.3. Demonstrate understanding of x-ray machine factors that influence radiation safety MSC: NBDHE, 2.2 Principles of radiologic health
| a. | refers to the placement of tungsten discs in the path of the x-ray beam between the collimator and the tubehead seal. |
| b. | filters out shorter-wavelength x-rays from the x-ray beam. |
| c. | results in a lower-energy beam. |
| d. | results in a more penetrating useful beam. |
ANS: D
Refers to the placement of aluminum discs in the path of the x-ray beam between the collimator and the tubehead seal. Filters out longer wavelength x-rays from the x-ray beam. Results in a higher energy beam. Added filtration in the dental x-ray tubehead results in a more penetrating useful beam.
DIF: Recall REF: Page 43 OBJ: 3
TOP: CDA, RHS, III.B.3. Demonstrate understanding of x-ray machine factors that influence radiation safety MSC: NBDHE, 2.2 Principles of radiologic health
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