Recurrent or residual caries appear as a radiolucent area with diffuse margins beneath or adjacent to a restoration. What term describes this radiographic feature?

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Multiple Choice

Recurrent or residual caries appear as a radiolucent area with diffuse margins beneath or adjacent to a restoration. What term describes this radiographic feature?

Explanation:
The situation described is recurrent or residual caries. When decay continues or reappears under or right next to an existing restoration, the radiographic sign is a radiolucent area with diffuse, poorly defined borders located beneath or adjacent to the restoration. This pattern reflects demineralization occurring at the restoration margin or underneath, rather than a new lesion on a non-restored surface. It’s different from occlusal, proximal, or root surface caries, which indicate decay on those specific surfaces rather than around a restored margin.

The situation described is recurrent or residual caries. When decay continues or reappears under or right next to an existing restoration, the radiographic sign is a radiolucent area with diffuse, poorly defined borders located beneath or adjacent to the restoration. This pattern reflects demineralization occurring at the restoration margin or underneath, rather than a new lesion on a non-restored surface. It’s different from occlusal, proximal, or root surface caries, which indicate decay on those specific surfaces rather than around a restored margin.

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