Radiology · patient case question
What do these radiopacities represent?
Patient case: Radiopacities within the pulp chambers of the maxillary central incisors
Patient: Female, 44 years old
Chief Complaint: “No complaints — I came for my recall.”
Background: No history of trauma, orthodontics or extensive restorative work. No systemic disease.
Vital Signs: BP 122/76 mmHg · HR 70 bpm
Findings: A full-mouth series shows discrete, well-defined ROUND RADIOPACITIES within the coronal PULP CHAMBERS of teeth #8 and #9. The restorative chart records NO restorations on either tooth. Both teeth are caries-free, normal in colour, non-tender to percussion, and respond normally to cold testing. No periapical changes.
Show answer and explanation
Correct answer: C. Pulp stones (denticles)
- A. Internal resorption produces a symmetrical RADIOLUCENT balloon-like expansion of the canal or chamber, with loss of the original canal outline. It is the opposite radiographic appearance.
- B. Condensing osteitis is sclerosis of BONE around the apex of a tooth with a chronically inflamed pulp — it lies outside the tooth, not inside the chamber, and requires a pulpal insult that these vital, unrestored teeth do not have.
- C. CORRECT. PULP STONES, or denticles, are discrete calcified masses within the pulp chamber. They are common — reported in a large minority of teeth, rising with age — and are usually an INCIDENTAL, asymptomatic finding requiring NO treatment. They are classified as TRUE (containing dentinal tubules, lined by odontoblasts) or FALSE (concentric layers of mineralised tissue, far commoner), and as free, attached or embedded. Associations include ageing, trauma, orthodontic movement, and systemic conditions such as dentin dysplasia. Vital teeth, no caries, no restorations and a discrete opacity inside the chamber is the pattern.
- D. Recurrent caries is RADIOLUCENT, not radiopaque, and would sit at a restoration margin. Both teeth are recorded and observed as unrestored and caries-free.
Note: The reason this matters clinically is ACCESS. A large or attached pulp stone obstructs the entrance to the canal orifice, and forcing past it causes gouging, ledging or perforation. If these teeth ever need root canal treatment, plan for it: magnification, ultrasonic tips to trough around the stone rather than through it, and a preoperative radiograph read carefully. Pulp stones themselves are not an indication for treatment and are not a cause of pain.