Stretch the Double-Wedge, using progressively firmer pulls, before "flossing" between the teeth. This action not only makes the wedge thinner and longer, but it also changes the molecular structure of the plastic, making it stronger.

Double-Wedges work well with all matrix bands because they are not sharp, are excellent separators and also stop interproximal gingival bleeding. We have found that they work particularly well with the KerrNeos Supermat System because the retainer does not obstruct placement of the wedge. You can use them with bands like Tofflemire but the retainer arm can get in the way.

Double-Wedges are made of a surprisingly strong and elastic material. Most people cannot break them by pulling at each end.

Yes, in fact they work especially well at retaining the rubber interproximally and protecting it from being caught by the high-speed bur.