Chapter 15

Question 1

To competently integrate dental radiographs into patient treatment, the hygienist most

Answer 1

Recognize normal anatomy, landmarks, and restorations from abnormalities, pathologies, and artifacts

Question 2

Oral tissues and dental materials in the oral cavity result in a radiographic contrast on a processed radiograph. These structures attenuate the primary beam of the x-rays.

Answer 2

Both statements are true.

Question 3

The more dense the object/material in the oral cavity, the more radiolucent the area will appear on a dental radiograph. The less dense the object/material in the oral cavity, the more radiopaque the area will appear on a dental radiograph.

Answer 3

Both statements are false.

Question 4

Endodontically treated tooth may be sealed with gutta percha. The gutta percha appears radiolucent on the radiograph.

Answer 4

The first statement is true, the second statement is false.

Question 5

A porcelain fused to metal crown appears both radiolucent and radiopaque on the radiographs. This radiographic appearance is caused by the various types of electromagnetic radiation.

Answer 5

The first statement is true, the second statement is false.

Question 6

The presence of an orthodontic band interferes with the detection of a carious lesion because

Answer 6

The band encircles the tooth, and it’s radiopaque appearance prevents the identification of proximal or occlusal decay.

Question 7

Resorbable materials used to repair or regenerate the periodontium are not generally visible on radiographs. The resultant healing of the resorbable material may be a identified on the radiograph.

Answer 7

Both statements are true.

Question 8

A base may be placed under a new restoration and act as a thermal insulator to the pulp. Compared to metal restoration the radio graphically visible base material is

Answer 8

Radiolucency

Question 9

To differentiate a radiopaque dental material from enamel or dentin one should compared the

Answer 9

Shape of the radiopacity with the expected anatomical features of the tooth

Question 10

In recent years, it has become less confusing to radio graphically distinguish composite resin restorations from carious lesions. The reason is that the composite restorative material

Answer 10

Contains radiopaque filler particles