Which term refers to film designed for use in duplicating machines?

• A. Duplicating Film
• B. Extraoral Film
• C. Cassette
• D. Cephalometric Film

Answer: (A)

Duplicating film is the type of film designed to be used with duplicating machines to produce copies of radiographs. The duplicating machine shines light through the original radiograph and onto the duplicating film, creating a faithful duplicate without exposing a patient. This film isn’t for taking new images; it’s for making copies.

Other terms refer to different purposes: extraoral film is used for radiographs outside the mouth (like panoramic or cephalometric images), a cassette is the protective container that holds film during exposure, and cephalometric film is specifically for cephalometric radiographs in orthodontics.