Which statement about radiation damage is true?

• A. Damage from radiation is never completely repaired
• B. Damage from radiation is always completely repaired
• C. Damage from radiation is easily repaired
• D. Damage from radiation is not a concern in dental imaging

Answer: (A)

In dental radiology, exposure to ionizing radiation can cause cellular injury, and while cells have repair mechanisms that mend many lesions, repair is not perfect. Some damage, especially to genetic material or in sensitive tissues, can persist or lead to latent effects that don’t show up right away. Because of this, a statement like “damage from radiation is never completely repaired” reflects reality: repair can fix much of the damage, but not all of it, and permanent or long‑lasting changes can occur.

This is why the other ideas aren’t accurate in this context: damage isn’t always completely repaired, and it isn’t always easily repaired. Plus, radiographic imaging is not risk-free, even at dental doses, so saying it isn’t a concern would be misleading. The emphasis is on minimizing exposure (ALARA) because some effects may be permanent or appear later, even with small doses.