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Endodontics · single question

What is the primary purpose of placing a post in an endodontically treated tooth?

  1. To reinforce or strengthen the remaining root structure
  2. To provide retention for a core/crown restoration when there is insufficient remaining coronal tooth structure (retention, not reinforcement, is the goal)
  3. To completely fill and seal the entire canal space
  4. To prevent future caries
Show answer and explanation

Correct answer: B. To provide retention for a core/crown restoration when there is insufficient remaining coronal tooth structure (retention, not reinforcement, is the goal)

A common misconception is that posts strengthen a root — in fact, posts do not reinforce roots and unnecessary post space preparation can weaken them by removing dentin. The actual purpose of a post is purely retentive: helping a core/crown restoration stay attached when too little natural coronal structure remains.

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