For periapical infections, what is the primary step to resolve the lesion?

• A. No radiographic changes in the early stages
• B. Increased periapical radiopacity
• C. Diffuse bone sclerosis at the apex
• D. Clear signs of infection on radiograph

Answer: (A)

In the beginning of a periapical infection, the problem is active at the apex, but bone changes haven’t yet become visible on X-rays. Radiographs often show no changes in the early stages, even though the infection is present. This lag means that the first reliable radiographic sign appears only after bone resorption has begun, typically as a radiolucent area around the apex. So the statement that there are no radiographic changes in the early stages best captures what you’d expect to see initially. As treatment removes the infection, healing may later show increased radiopacity or sclerosis as the bone regenerates, whereas active infection on radiographs would only be evident once there are enough bone changes to be detectable.