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Restorative & Materials · single question

What is the purpose of a post?

  1. Retain the core (build-up)
  2. Retain the crown (the crown is retained by the core, not directly by the post)
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Correct answer: A. Retain the core (build-up)

  • A. Correct. A post's primary function is to retain the core build-up material within the root canal space, providing a foundation for crown preparation; it does not retain the crown directly.
  • B. This is incorrect — the crown is retained by the prepared core/tooth structure, not directly by the post itself, which is a common misconception.

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