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Restorative & Materials · single question

What is the typical preparation margin design at the incisal edge of a porcelain veneer when additional length or strength is needed?

  1. A shoulder (or incisal overlap) design, providing enough material bulk for strength
  2. A simple feathered chamfer only, with no added bulk
  3. No preparation is performed at the incisal edge under any circumstances
  4. A deep subgingival chamfer
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Correct answer: A. A shoulder (or incisal overlap) design, providing enough material bulk for strength

When incisal length or strength needs to be added (e.g., due to incisal wear), a shoulder or incisal overlap design is typically used so the ceramist has enough material bulk at that edge to resist fracture, compared with a simple feathered finish line that would leave too little ceramic thickness.

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