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Pathology · single question

Which of the following is NOT true about taurodontism?

  1. Radiographically it shows tall pulp chambers with short roots and an apically positioned furcation
  2. It is characterized by an occlusally displaced furcation
  3. It features enlarged pulp chambers with apical displacement of the pulp floor
  4. It can be associated with Down syndrome and Klinefelter syndrome
Show answer and explanation

Correct answer: B. It is characterized by an occlusally displaced furcation

  • A. Incorrect — this IS true. Radiographically: extremely tall, rectangular-shaped pulp chamber with short roots and apically placed furcation.
  • B. Correct — NOT true. In taurodontism, the furcation is displaced APICALLY (toward the root tips), NOT occlusally. The pulp chamber extends deeper than normal, PUSHING the furcation toward the apex. 'Occlusally displaced furcation' is the OPPOSITE of what occurs.
  • C. Incorrect — this IS true. Taurodontism involves vertical elongation of the crown/body with apical displacement of the pulp floor.
  • D. Incorrect — this IS true. Taurodontism is associated with Down syndrome, Klinefelter syndrome, and ectodermal dysplasia.

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