ContacEZ Ideal Proximal Contact Adjuster Black Strips Set is Restorative Strip System, an innovative, precision dental strip system designed to achieve ideal proximal contact adjustment and complete marginal seating of crowns, veneers, inlays/onlays, and proximal contouring of composite fillings accurately with minimal time and effort. Use the Black Diamond Strip to adjust ideal proximal contacts and restore interproximal relief (IR)* by eliminating excessive pressure between the indirect restoration and the adjacent teeth without opening the contact. Use this strip prior to definitive cementation of crowns, inlays/onlays, and veneers. It is also useful to contour proximal surfaces of composite fillings.