Plaque buildup between teeth- HERBADENT Original Floss Ultra-Fine Conical Fibers Food particles stuck in tight spaces- HERBADENT Original Floss Ultra-Fine Conical Fibers Gum inflammation from poor cleaning- HERBADENT Original Floss Ultra-Fine Conical Fibers Difficulty flossing narrow or sensitive gaps - HERBADENT Original Floss Ultra-Fine Conical Fibers