Interdental wedge

The wedge consists of a compressible base (3) made of wood or plastic on which is a plastic insert (2). The matrix conforms to the approximate shape of the tooth being treated. The insert is made of light-conducting plastic with reflector (10) throwing light onto the end surface (9) of the wedge for hardening the filling. The base is compressed by compressive force from its uncompressed state, and, under further compression, rises over proportionally to the compression so as to obtain a high separating force. The matrix is made of plastic into which gas bubbles and or compressible constituents of a filler are distributed, and consists of one or more thermoplastic materials or a mixture of them. The filler is made of one or more materials.