Which statement about shielding and protective equipment is supported by the material?

• A. The use of lead shielding is emphasized for protection against x-ray photons.
• B. Protective gear is optional.
• C. Protective gear eliminates the need for distance.
• D. X-ray machines do not require protective measures.

Answer: (A)

Shielding and protective equipment are essential to minimize radiation exposure in dental radiology. Lead shielding is emphasized because lead effectively attenuates x-ray photons, reducing the dose to both patient and staff. In practice, this means using lead aprons and thyroid collars for patients, and maintaining protective barriers and proper distance for operators, all in line with the ALARA principle—keeping exposure as low as reasonably achievable. The other statements aren’t supported because protective gear isn’t optional, distance and shielding don’t replace the need for protective equipment, and x-ray machines do require protective measures.