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 08: Dental X-Ray Image Characteristics
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
MULTIPLE CHOICE
| a. | Composite |
| b. | Amalgam |
| c. | Air space |
| d. | Enamel |
ANS: C
A composite can appear radiopaque or radiolucent on a dental image depending on the filler content. It is not as radiopaque as amalgam. Amalgam appears the most radiopaque on a dental image. An air space would appear the most radiolucent on a dental image. Enamel would appear radiopaque on a dental image. It is not as radiopaque as amalgam.
DIF: Comprehension REF: Page 72 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | a radiopaque image. |
| b. | a radiolucent image. |
| c. | the overall blackness or darkness of an image. |
| d. | the difference in degrees of blackness between adjacent areas on a dental image. |
ANS: C
Radiopaque refers to that portion of a dental image that appears light or white. Radiolucent refers to that portion of a dental image that is dark or black. Density is defined as the overall blackness or darkness of a dental image. Contrast is the difference in degrees of blackness between adjacent areas on a dental image.
DIF: Recall REF: Page 72 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | The enamel |
| b. | The pulp |
| c. | The denton |
| d. | The periodontal ligament space |
ANS: A
Radiopaque refers to that portion of a dental image that is white. The enamel is radiopaque and appears light on a dental image. Radiolucent refers to that portion of a dental image that is black. The pulp appears radiolucent or dark on a dental image. The denton appears less radiopaque on a dental image than the enamel. Radiolucent refers to that portion of a dental image that is black, not gray. Radiolucent refers to that portion of a dental image that is black or dark. The periodontal ligament space appears radiolucent or dark on a dental radiograph.
DIF: Application REF: Page 72 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | black. |
| b. | white. |
| c. | contains the tooth. |
| d. | within the plastic base. |
ANS: A
Radiolucent refers to that portion of a dental image that is black. Radiopaque refers to that portion of a dental image that is white. The pulp portion of the tooth is the most radiolucent part of the tooth.
DIF: Recall REF: Page 72 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | increases; lighter |
| b. | increases; darker |
| c. | decreases; darker |
| d. | decreases; lighter |
ANS: B
If the milliamperage is increased, the receptor density increases, and the image appears darker.
DIF: Recall REF: Page 73 OBJ: 5
TOP: CDA, RHS, III.B.1. Demonstrate knowledge of the factors affecting x-ray production
MSC: NBDHE, 2.1 Principles of radiophysics and radiobiology
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