In addition to uncomfortable food debris stuffed between teeth and bacteria, the greater harm is that it provides nutrients to dental plaque. If it is not removed in time, dental plaque can easily become calcified and become "tartar" which accumulates on the roots of teeth, oppresses and stimulates the periodontal environment, and causes periodontal atrophy. Therefore, using Water Flosser or toothpicks or dental floss to clean the gap between teeth is actually a major source of nutrients to block dental plaque.