DRC DRC Pathology & Radiographic Diagnosis

Question 1

On a periapical radiograph, a periapical abscess typically appears as:

Accepted Answer

A poorly defined radiolucency at the root apex

Answer

A periapical abscess typically appears as a poorly defined (diffuse) radiolucency at the root apex due to destruction of surrounding bone by acute infection.

Question 2

A periapical granuloma on a radiograph is most commonly characterized by:

Accepted Answer

A well-defined radiolucency at the root apex without a corticated border

Answer

A periapical granuloma appears as a well-defined but non-corticated (no surrounding white cortical bone line) radiolucency at the root apex.

Question 3

Which radiographic feature best distinguishes a radicular cyst from a periapical granuloma?

Accepted Answer

A well-defined radiolucency with a corticated (white) border

Answer

A radicular cyst is distinguished by a well-defined radiolucency with a corticated (sclerotic) white border, unlike the granuloma which lacks this distinct cortical rim.

Question 4

Horizontal bone loss visible on bitewing radiographs is most consistent with which condition?

Accepted Answer

Chronic periodontitis

Answer

Horizontal bone loss, where the alveolar crest is uniformly reduced in height parallel to the CEJ, is the most common pattern seen in chronic periodontitis.

Question 5

Dental caries on a bitewing radiograph first appears as:

Accepted Answer

A small radiolucent notch at the contact area of the enamel

Answer

Interproximal caries first appears radiographically as a small, triangular-shaped radiolucency at the contact area in the enamel before progressing to dentin.

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

DRC DRC Pathology & Radiographic Diagnosis