Which term would you reference when describing a white, X-ray opaque filling?

Which term would you reference when describing a white, X-ray opaque filling?

• A. Radiolucency
• B. Radiopacity
• C. Density
• D. Luminosity

Answer: (B)

On dental radiographs, how a filling shows up is described by its radiopacity. A white, X-ray opaque filling indicates high radiopacity, meaning it strongly attenuates X-rays and appears light on the film. Radiopacity comes from the radiopaque additives in the material that block X-ray beams. The opposite would be radiolucency, which appears dark because the material allows more X-rays to pass through. While density is a general physical property, radiopacity is the standard term used to describe a material’s appearance on a radiograph. Luminosity is unrelated to X-ray imaging, as it refers to light emission rather than X-ray attenuation.

On dental radiographs, how a filling shows up is described by its radiopacity. A white, X-ray opaque filling indicates high radiopacity, meaning it strongly attenuates X-rays and appears light on the film. Radiopacity comes from the radiopaque additives in the material that block X-ray beams. The opposite would be radiolucency, which appears dark because the material allows more X-rays to pass through. While density is a general physical property, radiopacity is the standard term used to describe a material’s appearance on a radiograph. Luminosity is unrelated to X-ray imaging, as it refers to light emission rather than X-ray attenuation.