Abstract: Tensile threads used for tooth care can be fastened to a fork-type holder. The ends of each thread have thickened portions in the form of knots which rest as abutments when the thread is placed in the holder on the fork-type arms. For storing the threads in a hygenically closable container, a plurality of threads are arranged spaced apart from each other and parallel to each other. The knots on each side of the threads are located in a row and are connected to each other through intended breaking points. The threads are placed in closable containers from which they can be moved individually by means of the fork-type holder. After the threads have been removed by the holder, the holder assumes it correct position of use.