Deck 13: Radiographic Assessment

Question 1

Radiographs and data obtained from the clinical examination are both used to evaluate a patient's periodontal status because radiographs do not show current disease status.

A)Both statement and reason are correct.
B)Both statement and reason are incorrect.
C)The statement is correct, but the reason is incorrect.
D)The statement is incorrect, but the reason is correct.

Answer 1

Both statement and reason are correct.

Question 2

Digital subtraction radiology meets which of the following objectives?

A)Detects small changes in osseous loss
B)Detects changes in the periodontal ligament space
C)Determines alveolar crestal bone level over different times
D)Reduces image time

Answer 2

Detects small changes in osseous loss

Question 3

For which of the following reasons are vertical bitewings used?

A)To show the alveolar crest in severe bone loss
B)To show the entire dentition
C)To decrease technique error
D)To reduce exposure time

Answer 3

To show the alveolar crest in severe bone loss

Question 4

Which of the following radiographs is ideal for visualizing the crestal lamina dura in a patient with moderate periodontitis?

A)Periapical
B)Horizontal bitewing
C)Vertical bitewing
D)Panoramic
E)Occlusal

Question 5

Which of the following radiograph images is three-dimensional?

A)Computed tomography
B)Panoramic films
C)Periapical films
D)Bitewing radiographs

Question 6

Which of the following imaging techniques uses less radiation and scans both the maxilla and mandible at the same time?

A)Typical CT scan
B)Cone beam CT scan
C)Panoramic radiograph
D)Digital subtraction radiograph

Question 7

Which of the following crown-to-root measurements is desirable when planning for a crown?

A)1:2
B)2:1
C)2:3
D)4:1
E)2:4

Question 8

Which of the following radiographs is best to locate the mandibular canal for implant placement?

A)Occlusal
B)Horizontal bitewing
C)Vertical bitewing
D)CT scan

Question 9

Which of the following is an advantage of using cone beam computerized tomography?

A)Lower radiation dose
B)Color images
C)Easy-to-read results
D)Does not use radiation

Question 10

Which of the following bony structures is based on the radiographic evaluation?

A)Radicular bone
B)Septal bone
C)Haversian canal
D)Marrow space

Question 11

Which of the following definitions is accurate for the crown-to-root ratio?

A)Amount of clinical crown exposed to the oral cavity
B)Amount of tooth embedded in bone
C)Length of root embedded in bone compared with the length of the rest of the tooth
D)Length of the clinical crown versus the length of the apical portion of the root

Question 12

Which of the following radiograph techniques uses three-dimensional imaging?

A)Digital subtraction radiography
B)Computerized tomography
C)Occlusal films
D)Panoramic films

Question 13

Which of the following parameters determines the quality of the x-rays produced?

A)Kilovoltage
B)Exposure time
C)Milliamperage
D)Film

Question 14

Which of the following features will a full mouth series show?

A)Generalized vertical bone loss
B)Pulpal tissues on molars
C)Periodontal ligament fibers
D)Gingival connective tissue
E)Fibroblasts within the periodontal ligament space

Question 15

In order to have radiographic bone loss, the alveolar crest must be

A)2 mm coronal to the CEJ.
B)2 mm apical to the CEJ.
C)3 mm coronal to the CEJ.
D)3 mm apical to the CEJ.

Question 16

Which of the following structures cannot be seen on a radiograph?

A)Floor of maxillary sinus
B)Infrabony pocket
C)Infrabony defect
D)Lamina dura

Question 17

It is difficult to recognize slight changes in alveolar bone that would indicate early or mild periodontal disease because radiographs represent a two-dimensional view of three-dimensional objects.

A)Both statement and reason are correct.
B)Both statement and reason are incorrect.
C)The statement is correct, but the reason is incorrect.
D)The statement is incorrect, but the reason is correct.

Question 18

All of the following are seen on a periapical radiograph except one. Which one is the exception?

A)Deep pockets
B)Gold crown
C)Bony crater
D)Hypercementosis

Question 19

Which of the following types of radiographs is commonly used for postevaluation of implants?

A)Periapical
B)Occlusal
C)CT scan
D)Digital subtraction radiography

Question 20

All of the following can be viewed on panoramic radiograph except one. Which one is the exception?

A)Maxillary sinuses
B)Pathologic lesions
C)Dental caries
D)Impacted teeth

Question 21

Computed tomography is a type of radiograph used for dental implants.

Question 22

The amount of penetration of the x-ray beam is controlled by the ________.

Question 23

Horizontal bitewings are ideal for visualizing the level of the alveolar bone crest when there is severe bone loss.

Question 24

Amalgam restorations appear radiopaque on radiographs.

Question 25

Only ________ tissues can be identified on a radiograph.

Question 26

Radiographic evaluation of alveolar bone loss is based on the status of the interdental septum.

Question 27

Radiographic selection criteria is important to reduce radiation exposure.

Question 28

Conventional radiographs give a history of ________ periodontal disease destruction.

Question 29

Panoramic radiographs are best used for diagnosing bone destruction on individual teeth.

Question 30

The periodontal ligament fibers are easily seen on a periapical radiograph.

Question 31

Radiographs serve to detect ________ changes.

Question 32

Radiographs provide information on early or mild periodontal diseases.