We can only clean the exposed parts of the teeth by brushing, but for some hidden parts, i.e. the parts where two teeth are in contact with each other, the bristles of the toothbrush cannot enter well because of the hidden position, even if we brush our teeth very carefully, we cannot clean these parts, resulting in these parts becoming hygienic “dead ends”. Most of us brush our teeth carefully, but there are always 30% to 40% of the tooth surface is not completely brushed, especially those who have uneven teeth alignment, because the teeth are out and in, crowded and overlapping, it is difficult to brush the teeth surface of these teeth clean. If you know how to floss correctly, you will make up for this deficiency. Some people use toothpicks first. It is true that toothpicks can enter the adjacent surfaces of the teeth and pick out the food residues between the teeth, but the surface of toothpicks is relatively rough and does not meet the needs of oral health care. When used, they can easily damage gum tissues and cause gum bleeding, which, over time, can easily cause gum recession. The best way to maintain hygiene on the adjacent surfaces of teeth is to use dental floss. Flossing is still new to most people in China, but it has been used in many countries for a long time. Flossing is an essential step for cleaning teeth, and is recommended to be used before each brushing. I. Cleaning range and function of dental floss The adjacent surface of teeth (the surface between teeth) cannot be brushed by toothbrushes, so we have to use dental floss to “scrape” the plaque off the adjacent surface. Flossing can also clean out the food stuffed in between teeth, but the main function of flossing is to remove the adjacent surface of teeth. Second, how to choose dental floss? You can choose floss with mint or other favorite flavors, or those with fluoride and other antibacterial ingredients. 2. For those who find it difficult to floss by hand, a small floss holder can be used. Flossing is a very ideal tool for cleaning teeth. Floss is mostly made of nylon, polyester or silk thread, dentistry line is generally coated with wax, some are also coated with aromatic agents and fluoride, floss is mostly flat, not too thick or too thin, to remove the toothbrush is not easy to brush the food debris in the crevices and the soft scales on the teeth. Generally, there are two types of dental floss available in the market, wax-free and waxed, and if you are just starting to floss, wax-free floss is preferred. How many times do I have to scrape the adjacent surfaces of my teeth with floss? To what extent is it considered clean? The best indicator is to scrape until a “squeaky” sound occurs. It’s like the squeak we hear when we wash the dishes. You can easily hear this sound with waxless floss, while waxed floss must be scraped off before you can hear this sound. The difference between waxed and unwaxed flossing in terms of cleaning effect is not much, but in view of the convenience of using and learning, we recommend using unwaxed floss. When to floss For most people, flossing once a day is sufficient. The best time to floss is after dinner and before going to bed. You can floss before or after brushing your teeth. Be sure to rinse your mouth after flossing to rinse out the debris. Fourth, the use of dental floss 1, intercept the arm-length dental floss (about 45 cm for adults) 2, one end around the second finger of the middle finger to save two turns, the distance of about 20 centimeters and then two turns around the second knuckle of the middle finger of the other hand; 3, a finger clenched fist, you can tense the floss; 4, turn both hands, so that the palm outward, while straightening the thumb and index finger of both hands, so that they are always angle quadrilateral, while the thumb gently This is the proper length of the floss between the two middle fingers, and it is also the basic gesture to operate the floss; 5, press the floss over the index finger of one hand and the fleshy area on the head of the thumb of the other hand. Keep a centimeter of floss between the two fingers; 6, two fingers straight, nail to nail, bring the floss into the gap; 7, tense the floss to the adjacent surface of the teeth so that it is slightly C-shaped up and down scraping, two fingers at the same time up and down movement; 8, scraping the other side of the same gap; 9, the same way, clean the teeth of the second gap; 10, scraping the adjacent surface of the lower row of incisors, the index finger changed to a top-to-bottom posture, at this time, to neighbor for The arm of the index finger should be raised. 11, index finger inside, thumb outside, while moving up and down. 12.When scraping the back teeth area, use the index finger of both hands. 13, one hand index finger will be the corner of the mouth and cheeks slightly open. 14.Start from the canine teeth and clean up one by one. 15.Move the index fingers of both hands up and down at the same time. 16.Scrape the back teeth of the upper jaw first, when the head can be tilted back to facilitate the line of sight. 17, scraping the lower jaw of the back teeth area, the same method, at this time to close the jaw, in order to facilitate the line of sight. 18, to do the last tooth of the last face. 19, it is advisable to start from the easier front teeth, gradually to the back teeth to do. When you are familiar with it, you can start from the upper right back teeth and end on the right side according to the main points of starting on the right side to avoid missing. (1) pull out a section of dental floss (about 30 cm long), the ends of the line wrapped around the middle finger of the left and right hand; (2) with the index finger and the thumb of the other hand taut dental floss, the distance between the two fingers about 5 cm; (3) with a gentle saw-like action, pull the floss between the two teeth, the floss gently through the contact point between the two teeth, so that the floss tightly on the surface of the teeth, the upper and lower inside and outside pulling the floss, the embedded food can be brought out with the floss The floss can be brought out with the movement of the floss, and the floss can be gently moved from the root to the crown to remove the tartar and plaque attached to the adjacent surface of the teeth by pressing the floss against the tooth surface in the shape of a C. Each tooth surface should be scraped up and down 4-6 times until the tooth surface is clean. (4) After removing the floss with a saw-like action, rinse your mouth to remove the plaque and food residue left behind. However, be careful not to use too much force so as not to damage the gums. It is important to use different sections of floss into different gaps to keep always removing plaque from adjacent surfaces with clean floss.