Question 197 · LDEK · Crowns
When preparing posterior teeth for fixed prostheses:
- A. functional dental cusps should be reduced by 3 mm and non-functional dental cusps by 2 mm.
- B. functional dental cusps should be reduced by 1.5 mm and non-functional dental cusps by 1 mm.
- C. functional dental cusps should be reduced by 1.5 mm and non-functional dental cusps should not be reduced.
- D. both functional and non-functional dental cusps should not be reduced.
- E. functional dental cusps should not be reduced, while non-functional dental cusps should be reduced by 1 mm.
Hint
Both cusp types need reduction to make room for material, but the cusp carrying the occlusal load needs more.
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