Finishing and Polishing Restorations · CDA

Why are multiple abrasive grits used progressively from coarse to fine during finishing and polishing?

  1. To reduce the total chairside working time
  2. To gradually remove irregularities for a smoother surface
  3. To make the surface more porous
  4. To deliberately create a macro-texture on the restoration surface
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Correct answer: To gradually remove irregularities for a smoother surface

Using abrasives from coarse to fine progressively removes deeper scratches and refines the surface, leading to minimal final roughness and better polish.

Difficulty: Medium Question 7 of 21

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