Brushing does not actually clean the teeth thoroughly because there are some surfaces that are difficult for the bristles to reach, especially the adjacent surfaces between the teeth. Medical experts have found that normal brushing only removes about 70% of the plaque on the tooth surface. For plaque and tartar in the crevices of the teeth, the toothbrush cannot reach these areas, which are the areas where bacteria accumulate and dental diseases are common. Therefore, in addition to brushing, flossing is quite important. Nowadays, some people are used to using toothpicks instead of flossing, which is actually harmful to oral health. In addition, you can also choose to use interdental brushes and flossers according to individual circumstances.