Bitewing X-ray showing a radiopaque linear artifact. What is it?

Correct answer: B. Wire — sensor cord/cable

• A. Jewelry would typically appear as a discrete shaped radiopacity (e.g., earring, necklace pendant), not a thin linear artifact running across the image consistent with equipment.
• B. Correct. A thin linear radiopaque artifact on a digital bitewing is classically the sensor cord/cable superimposed on the image.
• C. An extraoral orthodontic appliance would not typically appear as a simple linear cord-like artifact on an intraoral bitewing.