Question 115 · LDEK · Crowns
The following parameters influence the retention of prosthetic crowns and post and cores:
1) mutual relation of two opposing surfaces that should be parallel;
2) mutual relation of two opposing surfaces that should be parallel or slightly convergent;
3) length of prepared abutment teeth;
4) width of prepared abutments.
The correct answer is:
2) mutual relation of two opposing surfaces that should be parallel or slightly convergent;
3) length of prepared abutment teeth;
4) width of prepared abutments.
The correct answer is:
- A. 1,3.
- B. 1,4.
- C. 2,3.
- D. 2,4.
- E. 1,3,4.
Hint
Consider which wall taper is clinically realistic and which dimension of the preparation most directly lengthens the path of withdrawal.
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