Radiology · single question
How do you differentiate central ossifying fibroma from idiopathic osteosclerosis radiographically/clinically?
Show answer and explanation
Correct answer: B. Cortical expansion on radiograph
B) Cortical expansion — CORRECT.
Central ossifying fibroma causes expansion of the cortical plates as it grows (it is a true neoplasm). Idiopathic osteosclerosis (bone scar) is a dense radiopacity with NO cortical expansion, growth, or symptoms. It is a developmental finding. The key distinguishing feature is cortical plate expansion seen with ossifying fibroma.
A) Pulp vitality: Both lesions are associated with vital teeth typically. Not the differentiating factor.
C) Bleeding on aspiration: Not a standard differentiating test between these two lesions.
D) Root proximity: Both can be near roots — not differentiating.
Central ossifying fibroma causes expansion of the cortical plates as it grows (it is a true neoplasm). Idiopathic osteosclerosis (bone scar) is a dense radiopacity with NO cortical expansion, growth, or symptoms. It is a developmental finding. The key distinguishing feature is cortical plate expansion seen with ossifying fibroma.
A) Pulp vitality: Both lesions are associated with vital teeth typically. Not the differentiating factor.
C) Bleeding on aspiration: Not a standard differentiating test between these two lesions.
D) Root proximity: Both can be near roots — not differentiating.