Restorative & Materials · single question
For a full metal (full-cast) crown, where is the finish line/margin prepared?
Show answer and explanation
Correct answer: A. Circumferentially around the entire tooth (e.g., a chamfer)
- A. Correct. A continuous finish line (commonly a chamfer) is prepared all the way around the tooth to define the crown margin.
- B. A margin on only one surface would leave undefined, unsealed areas.
- C. An interproximal-only margin is incomplete.
- D. Every crown requires a defined finish line for fit and seal.
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