Lamina Dura Anatomy — NDEB AFK MCQ
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Correct answer: A — The alveolar bone proper (cribriform plate/bundle bone) lining the tooth socket
The lamina dura is the radiographic appearance of the alveolar bone proper (cribriform plate/bundle bone) — the thin layer of compact bone that lines the tooth socket. It appears as a continuous radiopaque (white) line surrounding the root. Radiographically, it represents the tangential projection of the bony socket wall. Loss of the lamina dura can indicate periapical pathology, periodontal disease, hyperparathyroidism, Paget disease, or other metabolic bone conditions. The PDL space appears as a thin radiolucent line between the root and the lamina dura.
Reference: White & Pharoah – Oral Radiology: Principles and Interpretation, 8th ed., 2019