GDC Tofflemire Matrix Retainer (MRTU)
The Universal (Tofflemire) matrix system is used in Class II restorations. The primary function of the matrix is to restore anatomic proximal contours and contact areas.
It is an appliance or device that keeps a tooth or partial denture in proper position. matrixretainer a mechanical device that clamps the ends of a matrix band and tightens it around a tooth.
Tofflemire retainer a type of matrix retainer.