Restorative & Materials · single question
A patient has short clinical crowns. Which margin design is most appropriate?
Show answer and explanation
Correct answer: A. Shoulder
- A. CORRECT. A shoulder provides a defined, bulky margin that supports the restoration where retention and structural form are limited by short crowns.
- B. INCORRECT. A chamfer is common but offers less bulk where crown height is minimal.
- C. INCORRECT. A feather edge gives a poor, ill-defined margin.
- D. INCORRECT. A beveled shoulder is used in specific metal-margin cases, not the best general choice here.
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