An X-ray of pulp chambers of teeth 8 and 9 shows radiopacity within the pulp chambers. No caries or restoration is present. The MOST likely finding is:

Correct answer: C. Pulp stones (dystrophic calcifications within the pulp)

• A. Secondary dentin forms on the pulp chamber walls (reducing the chamber size) — it would appear as narrowing of the pulp space, not as a distinct radiopacity within the chamber.
• B. Internal resorption appears as a radiolucency (widening) of the root canal — not radiopacity.
• C. Correct. Pulp stones (denticles) are calcified masses within the pulp tissue that appear as radiopaque foci within the pulp chamber on radiographs. They are common incidental findings (present in 20-30% of teeth) and are often asymptomatic. They can be true denticles (contain tubular dentin) or false denticles (dystrophic calcification).
• D. Normal pulp anatomy appears as a radiolucent space, not a radiopaque finding.