True vs False Pulp Stones — MFDS Part 1 MCQ

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ModeratePhysiologyTrue vs False Pulp StonesMFDS Part 1

Under the traditional histological classification of pulp stones, which finding most strongly favours a true denticle rather than a false denticle?

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Correct answer: C — An organised dentine-like structure with tubules and an odontoblast-like peripheral lining

Explanation lettering: C = shown as A · D = shown as B · A = shown as C · B = shown as D

A is correct. In traditional histological classification, a true denticle resembles dentine, with organised tubular architecture and an odontoblast-like peripheral lining. A false denticle is classically described as a less organised or concentrically laminated calcified mass deposited around a nidus such as degenerating cells, collagen or a vessel. Attachment to the pulpal wall does not distinguish true from false stones because either may be free, adherent or embedded. Pulp stones are not confined to inflamed or carious pulps, and enamel is not formed within dental pulp. Importantly, modern ultrastructural studies show morphological overlap and have identified tubules in some so-called false stones. The combination in A therefore most strongly favours a true denticle, but tubular structure alone should not be treated as an absolute biological distinction.

Reference: Le May O, Kaqueler JC. Scanning electron microscopic study of pulp stones in human permanent teeth. Scanning Microscopy. 1991;5(1):257-267. https://pubmed.ncbi.nlm.nih.gov/31757339/