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Endodontics · single question

A pulp vitality test reads NEGATIVE, yet the tooth is actually vital. This is a:

  1. False negative
  2. False positive
  3. True negative
  4. True positive
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Correct answer: A. False negative

  • A. Correct. A false negative is a negative test result in a tooth that is truly vital — common with calcified canals, immature apices, recent trauma, or heavily restored teeth.
  • B. A false positive is a positive (vital) result in a non-vital tooth (e.g., liquefaction necrosis, multi-rooted tooth, patient anxiety).
  • C. A true negative would mean a correctly identified non-vital tooth.
  • D. A true positive would mean a correctly identified vital tooth.

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