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Dens Invaginatus Classification — NDEB AFK MCQ

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HardDental Anatomy & OcclusionDens Invaginatus ClassificationNDEB AFK

The most common type of dens invaginatus (Oehlers classification Type I) involves invagination to what depth?

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Correct answer: A — Confined within the crown and not extending beyond the CEJ

Oehlers Type I dens invaginatus (the most common and mildest form) involves an enamel-lined invagination confined to the crown, not extending beyond the CEJ. Type II extends beyond the CEJ into the root but remains within the root canal as a blind sac. Type III extends through the root to the periapical area or lateral root surface with a separate foramen. Type I is usually an incidental finding and may only require prophylactic sealing of the cingulum pit to prevent caries.

Reference: Neville – Oral and Maxillofacial Pathology, 4th ed., 2016