Dental floss gentle on gums for periodontal disease prevention. Refills are now available for Floor Floss! 384 fibers remove plaque without damaging the gums. It removes plaque below the gum line without causing pain to the gums! Essential for periodontal disease prevention is removing gingival plaque attached 1-2mm above and below the gum line. Floor Floss's 384 fibers (expandable type) spread out gently, and even when inserted into the interdental space, they remove plaque without damaging the gums. Despite being waxed, the fibers are soft, so they can remove plaque from the surfaces between teeth and near the gums without damaging the gums. The average plaque reduction rate in the Floor Floss user group is about 70%. It has outstanding cleaning effectiveness. 3-piece sets are also available. Please comment if you need one. Please refrain from purchasing if you are looking for perfection, as this item is stored at home. Shipping is included, so it will be sent by the cheapest method. Thank you for viewing.