A pregnant patient has a painful tooth responsive to cold. Which radiographic prescription is most appropriate?

Correct answer: D. Periapical and bitewing of the affected area

• A. Incorrect. This adds unnecessary exposure without adding diagnostic value for a localised problem.
• B. Incorrect. A panoramic image delivers a broader exposure field and has insufficient resolution for caries and periapical detail.
• C. Incorrect. A full mouth series is a comprehensive survey and is not justified for a single symptomatic tooth in pregnancy.
• D. Correct. The ALARA principle requires the minimum imaging necessary to diagnose the presenting complaint. A periapical shows the apex and periapical status; a bitewing shows caries depth. Use a lead apron with thyroid collar.