When you brush your teeth, you can easily clean the inside, outside and occlusal surfaces of the teeth, but what about the hidden neighboring surfaces, the crevices that are difficult to pick out when food is embedded? Knowing that it is difficult to reach these locations with soft bristles alone, it is not hard to imagine that these neglected areas often accumulate a large amount of food debris, soft tartar, and plaque, which can lead to dental caries, gingivitis, or periodontitis. This is the reason why we use dental floss Floss should be individualized dental care products, each person has different options, crowded teeth, gaps, periodontal disease, bridge restoration, orthodontic in the teeth sensitive, etc., there are corresponding floss can be selected, you can try different types so as to choose the most suitable. In conclusion, flossing should not be painful, gums from the blood, should not hang wire, should not break the wire, otherwise it is the teeth or restorations have problems, need to go to the hospital for examination.