Restorative & Materials · single question

What is the primary advantage of CAD-CAM (Computer-Aided Design/Computer-Aided Manufacturing) restorations compared to conventional indirect techniques?

  1. Superior esthetics compared to conventional porcelain
  2. Elimination of laboratory processing steps allowing same-day restorations
  3. Lower cost per unit
  4. Greater longevity than conventionally fabricated restorations
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Correct answer: B. Elimination of laboratory processing steps allowing same-day restorations

The primary advantage of CAD-CAM technology in dentistry is the streamlined processing workflow that eliminates traditional laboratory steps (impressions, stone models, wax-up, casting/pressing) in favor of digital scanning, computer design, and milling. This allows for same-day chair-side restorations, reducing the number of patient appointments and eliminating the need for a provisional restoration. CAD-CAM-milled ceramics (e.g., lithium disilicate, zirconia) offer comparable or excellent esthetics, but this is not their primary advantage over conventional restorations. Cost per unit is generally higher for in-office CAD-CAM systems due to equipment investment.

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