Practice Quiz

INBDE Integrated National Board Dental Exam Prep Set 2

Category - NBDE II

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"Rootless teeth" is clinically called:

  1. Dentin dysplasia type I
  2. Ankylosis
  3. Dens invaginatus
  4. Hypoplastic amelogenesis imperfecta
Explanation

Answer: A - "Rootless teeth" is clinically called dentin dysplasia type I. The condition displays shortened roots due to disorganized radicular dentin with normal coronal enamel and dentin. Radiographically, the pulp chambers of permanent teeth are crescent-shaped, while in preliminary teeth the pulp chambers are destroyed. Due to increased tooth mobility, the patient is predisposed to periodontitis and tooth loss.

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