Radiographic Detection of Bone Loss — NDEB AFK MCQ

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ModerateRadiology & ImagingRadiographic Detection of Bone LossNDEB AFK

Periapical pathology appears radiographically as a radiolucency only after approximately what percentage of mineral loss from bone?

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Correct answer: B — 30-50%

Periapical radiolucencies become radiographically detectable only after approximately 30-50% of bone mineral has been lost from the area. This means early periapical pathology may be present without radiographic evidence. Additionally, periapical pathology in cancellous bone (which lacks dense cortical overlay) is detected earlier than pathology obscured by thick cortical bone. This is why periapical pathology in the anterior mandible may be detected earlier than in the posterior mandible.

Reference: White & Pharoah – Oral Radiology: Principles and Interpretation, 8th ed., 2019