Dental floss is an indispensable tool for removing bacterial plaque and food residues, a possible cause of gum problems and bad breath.| | Use Expanding Dental Floss Sensodyne to clean the areas of the mouth that the toothbrush cannot reach, in particular the spaces between one tooth and another and the gum line. The first use may cause slight gum bleeding, which is common. With regular use, the gums will become stronger.| | Sensodyne Expanding Floss is different from common dental flosses. It is made of soft fabric fibers, waxed and compressed, which make it particularly thin and able to glide gently between one tooth and another. During use, Expanding Floss increases in volume, allowing una greater cleaning of the interdental spaces.