Which statement best differentiates idiopathic osteosclerosis from condensing osteitis?

• A. Idiopathic osteosclerosis is asymptomatic; Condensing osteitis is symptomatic or hx of signs/symptoms
• B. Idiopathic osteosclerosis is symptomatic; Condensing osteitis is asymptomatic
• C. Both are symptomatic
• D. Condensing osteitis always causes external root resorption

Answer: (A)

The key idea is how symptoms and pulpal status distinguish these two radiopaque periapical lesions. Idiopathic osteosclerosis appears as a dense, well-defined radiopacity without any inflammatory process—teeth remain vital, and patients typically have no symptoms or history of pulp-related signs. Condensing osteitis, by contrast, is a bone reaction driven by chronic pulpal inflammation (usually from caries or trauma); it carries an inflammatory context, so there is often some history or signs of pulp pathology, even if the patient isn’t currently symptomatic.

So, the statement that idiopathic osteosclerosis is asymptomatic while condensing osteitis is associated with symptoms or a history of signs fits the fundamental distinction: one lesion lacks inflammation and symptoms, the other arises in the setting of pulpal inflammation. The other options conflict with these clinical relationships, such as claiming both are symptomatic or asserting features like universal root resorption, which aren’t defining or consistent.