Radiology · single question
Which radiographic view is MOST useful for demonstrating a suspected submandibular gland calculus?
Show answer and explanation
Correct answer: B. Mandibular occlusal (cross-sectional) radiograph
- A. A lateral cephalogram is a skeletal analysis view with heavy superimposition.
- B. Correct. A mandibular (cross-sectional) OCCLUSAL radiograph projects the FLOOR OF THE MOUTH free of the mandible, and is the classic view for demonstrating a radiopaque calculus in Wharton's duct. Roughly 80–85% of submandibular stones are radiopaque enough to be seen. Where the occlusal view is negative but the history is convincing, ultrasound or sialography is the next step.
- C. A panoramic view superimposes the mandible over the floor of the mouth and frequently obscures a stone.
- D. Bitewings image the crowns and crestal bone only.