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Restorative & Materials · single question

A woman has worn and chipped teeth. Teeth #6–11 are prepared with retraction cord placed. How should gingival retraction be performed?

  1. Vertically and laterally
  2. Only vertically
  3. Only laterally
  4. No retraction is necessary
Show answer and explanation

Correct answer: A. Vertically and laterally

  • A. Correct. Effective gingival retraction displaces tissue both vertically (apically) and laterally (horizontally) to expose the finish line and create space for impression material.
  • B. Vertical-only retraction does not adequately open the sulcus horizontally for an accurate margin capture.
  • C. Lateral-only retraction does not displace tissue apically enough to record the full margin.
  • D. Retraction is necessary for these subgingival/finish-line preparations to obtain an accurate impression.

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