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 33: Interpretation of Dental Caries
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
MULTIPLE CHOICE
| a. | periodontitis |
| b. | caries |
| c. | impacted teeth |
| d. | orthodontia |
ANS: B
In the practice of dentistry, caries are probably the most frequent reason for taking dental images.
DIF: Recall REF: Page 403 OBJ: 2
TOP: CDA, RHS, I.C.2.b. Identify anatomical structures, dental materials, and patient information observed on radiographic images
MSC: NBDHE, 2.4 Recognition of normalities and abnormalities
| a. | buccal |
| b. | lingual |
| c. | occlusal |
| d. | interproximal |
ANS: D
A dental image is most useful for detection of interproximal caries.
DIF: Comprehension REF: Page 405 OBJ: 2
TOP: CDA, RHS, I.C.2.b. Identify anatomical structures, dental materials, and patient information observed on radiographic images
MSC: NBDHE, 2.4 Recognition of normalities and abnormalities
| a. | radiopaque |
| b. | radiolucent |
| c. | white |
| d. | clear |
ANS: B
A carious lesion appears radiolucent (dark or black) on a dental image. Demineralization and destruction of the hard tooth structures result in a loss of tooth density in the area of the lesion. Decreased density allows greater penetration of x-rays in the carious area. A radiopaque (light or white) area would be due to increased rather than decreased density.
DIF: Recall REF: Page 404 OBJ: 3
TOP: CDA, RHS, I.C.2.b. Identify anatomical structures, dental materials, and patient information observed on radiographic images
MSC: NBDHE, 2.4 Recognition of normalities and abnormalities
| a. | Periapical |
| b. | Bite-wing |
| c. | Panoramic |
| d. | Occlusal |
ANS: B
The bite-wing image is the dental image of choice for the evaluation of caries. A periapical image using the paralleling technique can also be used for evaluation of dental caries; however, day-in and day-out, most practitioners rely on bite-wing images for the evaluation of caries in posterior teeth. Although panoramic images are superior to periapical or bite-wing images for visualization of the entire head and jaws, the resolution is less than that seen with intraoral images. In fact, a panoramic image is typically supplemented with bite-wing images to create a full mouth series. The steep vertical angulation of an occlusal image largely precludes utilization for the detection of caries.
DIF: Application REF: Page 404 OBJ: 3
TOP: CDA, RHS, I.C.2.b. Identify anatomical structures, dental materials, and patient information observed on radiographic images
MSC: NBDHE, 2.4 Recognition of normalities and abnormalities
| a. | Occlusal |
| b. | Buccal |
| c. | Lingual |
| d. | Interproximal |
ANS: D
Interproximal caries are found between two teeth. Occlusal caries involve the chewing surface of the posterior teeth. Interproximal caries are found between two teeth. Buccal caries involve the buccal tooth surface. Lingual caries involve the lingual tooth surface.
DIF: Recall REF: Page 405 OBJ: 6
TOP: CDA, RHS, I.C.2.b. Identify anatomical structures, dental materials, and patient information observed on radiographic images
MSC: NBDHE, 2.4 Recognition of normalities and abnormalities
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