What type of film would give the least exposure to patients due to its speed?

The least exposure to patients would result from using F-speed film because this type of film is designed to be more sensitive to radiation than slower films. F-speed film requires less exposure to produce a diagnostic image, which means that patients receive a lower dose of radiation during dental procedures.

This increased sensitivity is achieved through advancements in the film's emulsion technology, allowing for better image quality with reduced radiation. Therefore, using F-speed film is not only beneficial for obtaining clear images efficiently but also prioritizes patient safety by minimizing their overall radiation exposure.

Other types of film, such as C-speed, standard, and ultra-speed films, require more radiation to achieve comparable results, leading to higher doses for patients. Thus, adopting F-speed film in dental practices is a crucial component of radiation protection measures, emphasizing the importance of using the least amount of radiation possible while maintaining diagnostic image quality.