X-rays are ionizing radiation.

X-rays are ionizing radiation.

• A. True
• B. False
• C. Only at high energy
• D. Ionizing only when used with film

Answer: (A)

X-ray photons have enough energy to knock electrons off atoms they interact with, creating ions. In dental imaging, the photons produced by a standard X-ray tube have energies in the keV range, which ionizes tissue and air and is what enables image formation. This ionizing nature is a property of the radiation itself, not of how the image is captured, so whether you use film or a digital detector doesn’t change the fact that X-rays are ionizing. Therefore, the statement is true, since diagnostic X-rays ionize matter even at typical clinical energies.

X-ray photons have enough energy to knock electrons off atoms they interact with, creating ions. In dental imaging, the photons produced by a standard X-ray tube have energies in the keV range, which ionizes tissue and air and is what enables image formation. This ionizing nature is a property of the radiation itself, not of how the image is captured, so whether you use film or a digital detector doesn’t change the fact that X-rays are ionizing. Therefore, the statement is true, since diagnostic X-rays ionize matter even at typical clinical energies.