A conventional x-ray should be developed in a blue room.

A conventional x-ray should be developed in a blue room.

• A. True
• B. False
• C. Not sure
• D. Both

Answer: (B)

Conventional radiographic film must be protected from blue-green light during handling and development. The emulsion on dental radiographs is sensitive to blue and green wavelengths, so exposing it to blue light would cause fogging, which is a pervasive gray veil that lowers image contrast and hides details. To prevent this, the darkroom uses a safelight that filters out the blue-green spectrum—typically a red or amber safelight. With the proper safelight, you can see well enough to handle and process the film without fogging. A blue room would defeat this protection, so the correct practice is not to develop there.

Conventional radiographic film must be protected from blue-green light during handling and development. The emulsion on dental radiographs is sensitive to blue and green wavelengths, so exposing it to blue light would cause fogging, which is a pervasive gray veil that lowers image contrast and hides details. To prevent this, the darkroom uses a safelight that filters out the blue-green spectrum—typically a red or amber safelight. With the proper safelight, you can see well enough to handle and process the film without fogging. A blue room would defeat this protection, so the correct practice is not to develop there.