Which of the following is considered a protective measure to prevent radiation exposure?

Protective measures in radiation safety are crucial for minimizing exposure to patients and dental staff during radiographic procedures. The option indicating 'All of the above' is correct because each listed item contributes to radiation protection in distinct but effective ways.

Non-leaded aprons are designed to shield the body from scatter radiation, greatly reducing the risk of exposure to vital organs during dental procedures. They act as a physical barrier, preventing radiation from penetrating through the apron and thus protecting the individual wearing it.

Receptors, including digital sensors or traditional film, are necessary for capturing the radiographic image. Although primarily designed for image acquisition, the development of these devices has emphasized design improvements that inherently minimize the amount of radiation needed for a diagnostic quality image, thereby indirectly contributing to radiation safety.

Film holders are instrumental in stabilizing the receptor during exposure, ensuring that the necessary radiation is used efficiently and effectively. Proper positioning with film holders reduces the need for retakes, which further minimizes potential radiation exposure.

By acknowledging that all of these elements play a vital role in radiation protection, it’s clear that their collective use enhances safety in a dental setting. Therefore, choosing 'All of the above' recognizes the importance of each component in the overarching strategy to protect against radiation exposure.