Profile: Dupont Filaments offers a wide range of monofilaments for brushes. Our filaments come in various sizes, shapes and colors for the broad range of electric & manual toothbrushes, interdental brushes, floss threaders as well as tongue brushes. Our Tynex® embossed filaments are round with an irregular surface that helps to carry toothpaste as well as giving a perception of an effective scrubber.