A wedge is a piece of wood, metal, or other material with a sharply angled border created by double covering surfaces that is used to tighten or impart tension in a variety of ways.

Functions of wedges

• Prevents gingival extrusion of restorative material
• Defines gingival range of contact area
• Creates partition to make up for band thickness
• A traumatic retraction of rubber dam along with gingiva

Piggy back wedging

• When the wedge is substantially high to the gingival border, a smaller wedge is piggybacked in addition to the first
• This approach is useful in patients with interproximal tissue level recession

Double wedging:

• For wide proximal restorations, two wedges were employed, one from the lingual and the other from the face embrasure.

Wedge wedging:

• A second sharpened wedge is kept between the first and second wedges and the band if there is a concavity on the proximal surface