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Limitations of Radiographs in Dentistry

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Questions and Answers

What is the term that refers to the tissues that invest and support the teeth?

Cementum
Dentin
Gingiva
Periodontium (correct)

Where is the normal healthy alveolar crest located?

At the gingival margin
At the cementoenamel junction
Approximately 1.5 to 2.0 mm apical to the cementoenamel junction (correct)
At the root of the tooth

What is the normal appearance of the lamina dura in a healthy radiograph?

A flat, smooth line
A dense radiopaque line (correct)
A thin radiopaque line
A radiolucent line

What is the normal appearance of the periodontal ligament space in a healthy radiograph?

A thin radiolucent line (B) Signup and view all the answers

What is the shape of the alveolar crest in the anterior regions of the mouth?

Pointed and sharp (A) Signup and view all the answers

What is the significance of the lamina dura in radiographic interpretation of periodontal disease?

It is a normal anatomic landmark (A) Signup and view all the answers

How does the radiopacity of the alveolar crest compare between the anterior and posterior regions of the mouth?

It is less radiopaque in the posterior regions (D) Signup and view all the answers

What is the significance of the periodontal ligament space in radiographic interpretation of periodontal disease?

It is a normal anatomic landmark (B) Signup and view all the answers

How does the shape of the alveolar crest vary between the anterior and posterior regions of the mouth?

It is pointed and sharp in the anterior regions and flat and smooth in the posterior regions (D) Signup and view all the answers

What is the significance of the alveolar crest in radiographic interpretation of periodontal disease?

It is a normal anatomic landmark (C) Signup and view all the answers