Restorative & Materials · single question
Crown with sharp angles. What should you do?
Show answer and explanation
Correct answer: A. Smooth/relieve the sharp angles
- A. Correct. Sharp internal line angles in a crown preparation/restoration concentrate stress and increase fracture risk; they should be smoothed/rounded to distribute stress evenly.
- B. Making angles more acute increases stress concentration and fracture risk, the opposite of correct technique.
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