What type of radiation includes both natural and artificial sources?

Background radiation encompasses both natural and artificial sources of radiation. It is the radiation that is always present in the environment and originates from various sources. Natural sources include cosmic radiation from outer space, terrestrial radiation from radioactive materials in the earth, and radon gas from soil and rocks. Artificial sources come from human-made activities, such as medical procedures, nuclear energy production, and fallout from nuclear weapons testing.

This concept is crucial in understanding radiation safety and protection because it helps delineate the levels of exposure individuals may encounter in their daily lives and the distinction between sources of radiation that are naturally occurring versus those that are a result of human activities. Knowing about background radiation allows dental professionals and patients to make informed decisions regarding additional exposures, such as those from dental imaging, and to implement appropriate safety measures.