Wedge that provides for quick, safe and predictable composite restorations, with a tight contact and cervical sealing. FenderMate is designed to be inserted either buccally or lingually. The matrix reaches from the base of the wedge to just above the occlusal surface. The side of the wedge facing the adjacent tooth has an angled wing. During insertion, the wing presses the matrix firmly against the preparation, giving a tight seal at the cervical margin.