Scaling is medically referred to as scaling, also known as dental cleaning. Regular dental cleanings are good for your dental health. So, why do you need regular dental cleanings? It starts with the components and dangers of tartar. Tartar is a plaque-based mass that is calcified or calcifying on the surface of the teeth, and its main components are inorganic salts, such as calcium phosphate, calcium carbonate, magnesium phosphate, etc.; there are also small portions of organic matter, which contain a large number of pathogenic bacteria. Tartar accumulates on the cervical part of the teeth and on the surface of the teeth near the opening of the salivary glands, where it is not easy to brush. Tartar can be divided into: ① supragingival calculus – deposited above the gingival margin, which can be seen directly, light yellow or brownish black, easy to remove with instruments; ② subgingival calculus – deposited below the gingival margin, close to the root of the tooth in the periodontal pocket, which cannot be It can not be observed directly and can only be found with a dental probe, is hard, dark in color and difficult to remove. Tartar is an important causative factor for bleeding gums, bad breath, gingivitis and periodontal disease. Due to the long-term stimulation of tartar, especially subgingival calculus, the gum tissue can be damaged, local nutrient metabolism is impaired, resistance is reduced, pathogenic bacteria and their toxins invade, leading to the destruction of periodontal membrane, alveolar bone and other periodontal support tissues, loosening and loss of teeth. Therefore, it is necessary to scaling regularly to remove calculus, and the common method is scaling. Scaling is to remove tartar, tartar and plaque from the upper and lower gingival part of the neck of the teeth with instruments and to polish the tooth surface in order to clean the teeth, eradicate bleeding gums, eliminate gingivitis and prevent periodontal disease. After scaling, due to various reasons, tartar will be regenerated, so regular scaling is required, generally once every six months to a year. Of course, the interval of scaling should be shorter if the oral hygiene is poor, the tooth surface is rough, and the teeth are not aligned. At present, the commonly used scaling method is ultrasonic scaling method, which is a safe and effective scaling method with high efficiency, little stimulation and no damage to teeth. The discomfort caused by cold and hot stimulation will disappear within a short period of time after scaling, but it will disappear on its own within half a month after scaling. Some people are reluctant to clean their teeth after a scaling, because after the scaling, the teeth that were not sore are now sore in the cold, thinking that the teeth were damaged during the scaling, which is actually a misunderstanding. We know that the surface of tartar and tartar have a large number of bacteria, their metabolites stimulate the gums, causing inflammation of the gums, long-term stimulation will also cause gum recession, once the gums recede, the neck of the teeth is not covered by gums, some people are exposed dentin in the neck of the teeth, cold stimulation will cause pain, but when there is tartar accumulation on the surface, this stimulation pain is not obvious However, once the tartar is removed, the soreness becomes obvious instead. This situation cannot be said to be caused by the removal of tartar, but is the result of gum recession caused by the long-term stimulation of tartar bacteria. If the tartar is not removed, the gums will further recede to the point that they will loosen and fall off, so tartar removal is necessary. What about sore teeth? For those who have sore teeth after cleaning, the soreness will be reduced or eliminated automatically after a week or so, which is because the calcium ions deposited in saliva block the small canal of dentin; another situation is that the soreness is not eliminated by stimulation, we can go to the hospital and use 25% sodium fluoride glycerin to apply locally, that is, to do desensitization treatment. There is also a glass ion material that can be applied to the sensitive area to protect its surface. Patients can also brush their teeth with anti-acid toothpaste to achieve the purpose of eliminating soreness.