True or False: The detection of recurrent caries around restorations is affected by the angulation of the central ray.

• A. True
• B. False
• C. Not specified
• D. Only location matters

Answer: (A)

Central ray angulation shapes how a radiographic image projects the tooth-restoration interface, so it directly affects our ability to see recurrent caries. When the beam is aligned well with the tooth and restoration margins, the margins are represented with less distortion and the subtle radiolucent changes indicating demineralization near or under the restoration stand out more clearly. If the angle is off, the restoration can overlap the tooth in the image or shadows can be distorted, which can mask a small recurrent lesion or create misleading appearances. Therefore, proper angulation improves detection of recurrent caries around restorations, while improper angulation can hide or fake signs of decay.