According to the ALARA principle, radiation exposure must be kept:

The ALARA principle stands for "As Low As Reasonably Achievable." This concept is fundamental in radiation safety and is applied widely in the healthcare sector, particularly in dental radiography. It emphasizes the importance of minimizing radiation exposure to both patients and healthcare workers while still maintaining diagnostic efficacy.

The principle is based on the idea that every effort should be made to reduce exposure to levels that are as low as possible, taking into account the economic factors and practical aspects of the procedure. This involves using proper shielding, appropriate exposure settings, and limiting the number of images taken when unnecessary.

By adhering to the ALARA principle, practitioners ensure that they are cognizant of the potential risks of radiation and are committed to utilizing the most effective techniques and technologies to mitigate those risks while achieving the necessary diagnostic outcomes. This not only protects patients from unnecessary exposure but also upholds the ethical responsibility of healthcare providers to ensure safety in their practices.