In clinical work, many friends receive, “Doctor, I have brushed my teeth very carefully, all according to your recommended pasteurization method, why is there still so much tartar and the gums are still red and swollen. Brushing can only clean 70% of the plaque on the surface of the teeth. Teeth have five surfaces, usually brushing can only clean the inner, outer and occlusal surfaces thoroughly, but the plaque and tartar between the adjacent surfaces of two adjacent teeth are difficult to remove. The adjacent surfaces of the teeth and the gum sulcus area are areas that are not easily reached by brushing and can lead to tooth decay and gingivitis if there is food residue. Flossing is able to enter every gap of your teeth and reach narrow gaps that are difficult to reach with toothbrushes, rinses and flossing, effectively removing food residue, plaque and soft tartar from between your teeth and thoroughly cleaning your teeth. Massage the gums When flossing, it can also massage and stimulate the gums around the teeth to increase the blood circulation of the gums, which has the effect of preventing or reducing dental diseases. For this reason, I often recommend flossing to my friends. However, there are many people who do not know how to floss. 1, the type of floss dental floss there are 2 kinds, 1. with a rod-shaped (a rod above the floss) dental floss can be clear teeth stains, and the bottom of the rod (can be used as a toothpick); 2. with the tape measure, only draw floss out, pull to the specified length (depending on how long you need, generally in about 30cm), no matter what kind of floss can clean tartar. 2.How to use dental floss? Floss stick 1. Take out the dental floss with stick, squeeze the thin stick in your hand and look at the mirror. Rub the floss into one of the teeth up to the gums, but do not use too much force. Clean one side of the gap first. Rub the floss slowly up and down, in a “C” shape with the tooth surface to clean a larger surface; 2. The order is, starting from the simple incisors to the difficult to clean the big teeth. When one side is finished, change to the other side, and when the top is finished, change to the bottom; 4. When a flosser with a stick is contaminated, change to a new one. It takes many flossers with rods to clean all the teeth at once; 5. Rinse your mouth and clean the material left in your mouth. Finish cleaning. Floss roll 1. Intercept a piece of floss about 30 cm long, which is perfectly adequate; 2. Use two hands, with a mirror in front of you. Wrap both ends around the middle fingers of both hands, leaving a length of 10cm in the middle to make the floss taut. The middle finger controls the length of the line. During use, one middle finger loosens the line, the other middle finger wraps the line and can be replaced with a clean line segment; 3, the index finger and middle finger cooperate to control the strength and position of the line; 4, the cleaning method and order is the same as the floss stick; 5, rinse your mouth and clean up is complete. Precautions for flossing 1. Embed the floss not too fast, but slowly import it by pulling the saw, do not use too much force to avoid damaging the gum papillae; 2. Wrap some floss from one side to the other side each time to keep always removing plaque and food residues from the adjacent surfaces of teeth with clean floss segments; 3. After flossing, please brush and rinse your mouth in time to remove the plaque and food residues left in your mouth; 4, Flossing is not a substitute for normal brushing and mouthwash use; 5. Floss is a disposable item, please do not use it again after use; 6. Be sure to buy the regular brand of floss to avoid flossing itself is harmful to the body; 7. Pay attention to moisture and mold.