Rubberdam Frame (~10x10 cm) Promisee Dental suitable for perforating a rubber Variant:171 suitable for perforating a rubber dam with holes of different sizes that correspond to the size of the tooth to be insulated High quality stainless steel matrix tensioner or matrix retainer is a mechanical device designed to hold a matrix band in place on the tooth High quality stainless steel rubber dam or cofferdam frame to keep the rubber dam in position rubber dam clamping forceps and perforating forceps can be used in dentistry for: