FREE ADEX Dental Hygiene Radiographic Interpretation Questions and Answers

Question 1

Which radiographic finding is most indicative of advanced periodontitis?

Accepted Answer

Vertical bone loss exceeding 50% of root length

Answer

Horizontal bone loss in the crestal area

Answer

Widening of the periodontal ligament space

Answer

Loss of lamina dura around individual teeth

Question 2

A panoramic radiograph shows a radiolucent area around the apex of tooth #30, with a loss of the lamina dura. The patient reports no pain but a history of sensitivity to cold on that tooth. Which of the following conditions is most likely represented by this radiographic finding?

Accepted Answer

Periapical cyst

Answer

Periodontal abscess

Answer

Cementoma

Answer

Internal resorption

Question 3

When interpreting radiographs for periodontal health, what does a distinct, unbroken lamina dura around the entire root of a tooth typically indicate?

Accepted Answer

A healthy periodontium

Answer

Active periodontal disease

Answer

Early radiographic sign of trauma

Answer

Advanced caries leading to pulpitis

Question 4

Which of the following radiographic features is considered an early sign of periodontal disease?

Accepted Answer

Loss of crestal cortical bone ('cupping' or 'fraying')

Answer

Furcation involvement

Answer

Generalized horizontal bone loss below the cementoenamel junction

Answer

Widening of the periodontal ligament space around multiple teeth

Question 5

A patient's periapical radiograph shows an oval-shaped, well-defined radiopacity superior to the apices of the maxillary central incisors. The patient is asymptomatic, and the teeth test vital. What is the most probable diagnosis?

Accepted Answer

Naso-palatine duct cyst

Answer

Residual cyst

Answer

Odontoma

Answer

Torus palatinus

Question 6

A dental hygienist is reviewing bitewing radiographs and observes an irregular, amorphous radiopacity superimposed over the coronal portion of a molar, clearly separate from the tooth structure. This finding is most likely indicative of:

Accepted Answer

Calculus deposit

Answer

Dense bone island

Answer

Pulp stone

Answer

External resorption