What does "fast film" refer to in radiographic imaging?

In radiographic imaging, "fast film" refers to the type of film that requires less radiation to produce an image. This is because fast films are more sensitive to X-rays or other forms of radiation, allowing for quicker exposure times without compromising the quality of the image. This sensitivity makes fast films particularly advantageous in dental imaging, as they help to reduce the total radiation dose that patients receive during procedures. The ideal use of fast films can lead to improved safety and comfort for patients, as less exposure is needed to achieve a diagnostic-quality image.