Myth 1: “People losing teeth in old age is a natural phenomenon” Correction: In the past thousands of years, limited by the development of dentistry, the two most common oral diseases of human beings, caries and periodontal disease, were not effectively treated, and with the growth of age, teeth are gradually destroyed, loosened to fall out, so the concept of “people are bound to lose teeth in old age” has been formed. Therefore, the concept of “people are bound to lose their teeth when they are old” has been formed. In fact, modern science has proved that as long as pay attention to oral health care, people can still have a good teeth when they are old. If you do not pay attention to oral health, there are a lot of harmful oral health risk factors, even if young, as always, will become young “toothless old”. To have a healthy teeth, self-care is the first priority, to do oral hygiene, the appropriate amount of fluoride, to develop a diet beneficial to oral health; but also regular oral examination, timely treatment of existing oral disorders. Myth two: “a child lost a tooth” correction: after pregnancy, the level of endocrine hormones in the blood rose, resulting in gingival vascular growth, if this poor oral hygiene, the dental surface will accumulate a lot of soft scale and bacteria, the fragile gum tissue stimulation, so that the occurrence of “gingivitis pregnancy “If pregnancy gingivitis is not effectively controlled, further development will become periodontitis, and rapidly progressing periodontitis can cause significant resorption of alveolar bone in a short period of time, resulting in loose teeth and loss. If you strengthen the maintenance of oral hygiene during pregnancy, regular oral health checkups and treatment before and during pregnancy, then you can still have a healthy set of teeth during pregnancy and after delivery. Myth 3: “Gum bleeding should stop brushing and brush again when it gets better” Correction: Bleeding gums indicate inflammation of the gums and need to see a dentist, but brushing should not stop, and a soft-bristled toothbrush should be used to brush carefully to remove bacteria and other irritants and improve the symptoms of bleeding gums. Myth 4: “Tartar has the role of protecting the teeth, remove it, the teeth will be loose” Correction: Tartar is the hard dirt formed by the long-term retention of bacteria and soft scale in the oral cavity, after the deposition of calcium salts in saliva, just like the scale in the kettle, people with poor oral hygiene, or people with high alkaline saliva are prone to depositing tartar, and the more it accumulates, the thicker it becomes. The presence of tartar can stimulate inflammation of the gums, causing gingivitis and periodontitis, and can lead to gum recession, root exposure, and gradual resorption of the alveolar bone around the root, eventually leading to gradual loosening and loss of teeth. The tartar deposited under the gums can also cause bleeding and abscesses in the gums. If you have never cleaned your teeth for more than ten years or decades, you will naturally feel that the gap between your teeth has become bigger and the roots of your teeth are exposed after the first cleaning. Myth 5: “Scaling will damage teeth” Correction: Nowadays, most of the hospitals or clinics use ultrasonic scaling machines, which remove tartar by ultrasonic vibration, not by grinding tartar, so it will not damage teeth.