A wedge system for use in a dental restoration procedure for a posterior tooth. The wedge system includes a first wedge including a body portion adapted to be disposed in an approximal space, a first arm extending from the body, a second arm extending from the body portion, a gap formed between the first arm and the second arm, a first rib arranged on an inner surface of the first arm, and a second rib arranged on an inner surface of the second arm, wherein each of the first and second ribs is adapted to engage tissue defining the approximal space. In some cases, the wedge system may also include a second wedge including a body portion, at least a portion of which can be disposed in the gap of the first wedge to removably secure the second wedge to the first wedge.