Question 245 · LDEK · Cavity preparation
Which of the following information about the pre-wedging procedure in conservative dentistry is true?
1) it involves wedge placement between adjacent teeth;
2) it involves sealing the matrix band with a wedge;
3) it allows a slight separation of teeth;
4) it protects gums and the rubber dam;
5) it is used for the gingiva retraction in class V cavities according to Black.
The correct answer is:
2) it involves sealing the matrix band with a wedge;
3) it allows a slight separation of teeth;
4) it protects gums and the rubber dam;
5) it is used for the gingiva retraction in class V cavities according to Black.
The correct answer is:
- A. 1,2,3.
- B. 1,3,4.
- C. 1,3,5.
- D. 2,3,4.
- E. 3,4,5.
Hint
Pre-wedging is done before the bur touches the proximal surface; ask what a wedge can do at that moment, not after a matrix is placed.
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