ADEX Radiographic Interpretation 2

Question 1

Which radiographic feature best distinguishes a periapical abscess from a periapical granuloma?

Accepted Answer

Both appear identical radiographically and cannot be differentiated

Answer

Periapical abscesses and granulomas cannot be reliably distinguished from each other radiographically; histopathologic examination is required for definitive diagnosis.

Question 2

On a bitewing radiograph, what does a triangular-shaped radiolucency at the crestal bone between two teeth most likely indicate?

Accepted Answer

Early interproximal bone loss due to periodontal disease

Answer

A triangular radiolucency at the crestal bone interproximally is characteristic of early horizontal bone loss associated with periodontal disease.

Question 3

A radiograph reveals a radiolucent lesion with scalloped borders surrounding the crowns of multiple impacted teeth. What is the most likely diagnosis?

Accepted Answer

Gorlin-Goltz syndrome (nevoid basal cell carcinoma)

Answer

Multiple odontogenic keratocysts surrounding impacted teeth are pathognomonic of Gorlin-Goltz syndrome (nevoid basal cell carcinoma syndrome).

Question 4

The lamina dura appears as a thin radiopaque line surrounding the root on a periapical radiograph. What does loss of the lamina dura most commonly indicate?

Accepted Answer

Hyperparathyroidism or Paget's disease

Answer

Loss of the lamina dura is associated with metabolic conditions such as hyperparathyroidism, Paget's disease, and osteomalacia.

Question 5

Which type of bone loss pattern on a radiograph is most commonly associated with localized aggressive periodontitis?

Accepted Answer

Vertical or angular bone loss localized to first molars and incisors

Answer

Localized aggressive periodontitis classically presents with vertical bone loss concentrated around first molars and incisors in an otherwise healthy periodontium.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Radiographic Interpretation 2