Crown and Bridge Work Assist · CDA

What is the role of gingival retraction during crown or bridge impression making?

  1. To permanently whiten the surrounding gingiva
  2. To expose sub-gingival margins for accuracy
  3. To make the impression material harden more quickly
  4. To bond the crown margin directly onto the gingiva
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Correct answer: To expose sub-gingival margins for accuracy

Gingival retraction displaces soft tissue so that sub-gingival margins are exposed, enabling impression material to accurately capture the finish line, which is critical for proper marginal fit of the restoration.

Difficulty: Medium Question 4 of 20

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