Finishing and Polishing Restorations · CDA

Which polishing medium is commonly used as a final step to achieve high luster on composite restorations?

  1. Aluminum-oxide polishing paste with a soft rubber cup
  2. A coarse diamond bur run at high speed for final gloss
  3. Carbon steel bur
  4. Sandblasting particles
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Correct answer: Aluminum-oxide polishing paste with a soft rubber cup

Aluminum-oxide polishing pastes applied with a soft rubber cup are standard for final surface gloss and smoothness on restorations. Diamond or steel burs are too abrasive for final polish; sandblasting isn’t used clinically for final polish.

Difficulty: Medium Question 12 of 21

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