Diagnostic Procedures & Interpretation Flashcards
7 cards from real Radiation Health and Safety Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Diagnostic Procedures & Interpretation flashcards as text
Which dental structure appears most radiopaque on a radiograph?
Answer: Enamel
Enamel is the densest, most highly mineralized tissue, so it absorbs the most radiation.
The pulp chamber appears on a radiograph as:
Answer: A radiolucent area within the dentin
Pulp is soft tissue that absorbs little radiation, so it appears dark.
The lamina dura appears as:
Answer: A thin radiopaque line lining the tooth socket
The lamina dura is dense cortical bone lining the alveolar socket.
A well-defined periapical radiolucency at the apex of a nonvital tooth most commonly suggests:
Answer: Periapical lesion such as an abscess, granuloma, or cyst
Loss of bone from pulpal necrosis and infection appears as a radiolucency around the apex.
How does an amalgam restoration appear on a radiograph?
Answer: Very radiopaque
Metal restorations absorb nearly all x-rays and appear solid white.
A small round radiolucency near the apices of mandibular premolars is most likely the:
Answer: Mental foramen
The mental foramen is a normal anatomic landmark that can mimic pathology.
Interproximal enamel caries typically appears as:
Answer: A triangular radiolucency with its base toward the tooth surface
Demineralization decreases density, creating a triangular dark area with the base at the outer surface.
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