When deep gingival extension of proximal box is anticipated, which of the following is used?
Correct Answer: Triangular wedge
Description: To protect the gingiva and the rubber dam when extending the gingival wall apically, a wooden wedge should already be in place in the gingival embrasure to depress soft tissue and the rubber dam. A round toothpick wedge is preferred unless a deep gingival extension is anticipated. A triangular (i.e., anatomic) wedge is more appropriate for deep gingival extensions because the greatest cross-sectional dimension of the wedge is at its base; as the gingival wall is cut, the bur’s end corner may shave the wedge slightly.
Category:
Dental
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