With the enhancement of people’s awareness of oral health care, there are more and more people going to hospital dental clinics for dental cleaning, and most of them are young people. Regular dental cleaning can not only remove tooth pigmentation caused by smoking, drinking cola, coffee, strong tea, play a cosmetic role, the main thing is to remove dental calculus, get rid of dental plaque. Because these bacteria will not only bring oral diseases, and even cause systemic diseases, such as dental plaque in the bacterial organisms induced heart disease risk factors. Nowadays, young people also accept regular dental cleaning as a kind of fashionable health behavior, but middle-aged people account for the proportion of the dental cleaning population is not high, in the hospital clinic dental cleaning is still the main periodontal disease patients. In foreign countries, the general population every 3 months dental cleaning once, and in the country to do dental cleaning health care is not much, it is estimated that the main thing is that people have a certain “misunderstanding” of dental cleaning. Misunderstanding: I brush my teeth very seriously, no need for cleaning. Some people think that if you brush your teeth seriously every day, you don’t need to clean your teeth, which is not true. This is not true, because the generation of plaque is very fast, in half an hour after thorough brushing, there will be new plaque formation, within 30 days can reach the maximum amount. What’s more, most people do not grasp the correct method of brushing, just according to their own habits for dental cleaning, it is inevitable that some parts of the brush is not in place, especially in the crevices of the teeth and the lower anterior teeth inside the very much, over time that is to become dental calculus, therefore, adults who have not washed the teeth, as soon as possible to the hospital to do a scaling, and it is best to do it once every six months. Myth: wash down the tartar is a part of the teeth tartar is deposited on the surface of the teeth have been calcified or are calcified plaque and other deposits, as if the scale in the warm water bottle as hard. Tartar is divided into supragingival tartar and subgingival tartar, usually supragingival tartar. Tartar is mainly accumulated in the large teeth and teeth on the inside, the toothbrush is not easy to brush to the side, in fact, take a mirror can be observed, can also be felt with the tip of the tongue, clean and clean teeth do not have these deposits. Myth: dental cleaning will destroy the enamel on the surface of the teeth, causing damage to the teeth Our periodontal often have some calcified hard deposits – tartar, even if daily brushing is also difficult to remove clean, so the need for professional dental cleaning. At present, most of the teeth cleaning is ultrasonic cleaning, that is, the use of ultrasonic vibration will be shocked down tartar, and grinding teeth teeth surface, in order to remove tartar on the teeth and periodontal tissues of the damage. In the regular hospital cleaning process, the cleaning head can form a small scratch on the surface of the tooth enamel, however, the tooth enamel can repair itself for this small scratch. It is important to note that unregulated and incorrect practices can damage the surface of the teeth. Myth: Teeth become whiter after cleaning Some people believe that healthy teeth are pure white, just like the teeth of the models in the toothpaste commercials. This is actually wrong. The structure of a normal tooth is a layer of more transparent enamel contains a yellowish dentin, so it can transmit part of the color of the dentin, so the color of a normal tooth should be slightly yellow. In daily use the surface of the teeth will certainly accumulate some pigments, these pigments will make the color of the teeth look more unattractive. An important goal of scaling is to remove as much of this pigment as possible, so after a perfect scaling, the teeth will be exposed to their own color, which is a light yellow, as this stained pigment is well removed. Overall, teeth will whiten to a certain extent after scaling, however, as a means of preventing and treating periodontal disease, scaling to whiten teeth is extremely limited. Patients can improve the appearance of their teeth more dramatically through other means such as cold light whitening, aesthetic restorations, and other techniques. Myth: Scaling causes tooth sensitivity Tartar is like a thick layer of cotton wool wrapped around the outer layer of the teeth. After removing tartar through scaling, the teeth are exposed to a long-lost external environment, which can produce all sorts of strange sensations. If the teeth are healthy, this sensitivity usually disappears within one to two weeks after scaling. Myth: Teeth cleaning causes tooth soreness and pain, which will increase the gap and make the teeth loose Some people feel a slight soreness and tenderness in their teeth after scaling, and even feel that the gap between their teeth has become bigger. This is because some of the hard tissues of the tooth surface are subject to mechanical friction after scaling, and the teeth have a slight allergy. However, the damaged tooth surface will soon be calcified by the minerals in saliva, and the sensitivity symptoms will disappear. If the gap between the teeth is bigger, it means that there is periodontal disease itself, and the gums have shrunk, and removing the tartar gives the illusion that the gap between the teeth has widened. This is not caused by the treatment, but by the periodontal disease itself. If the tartar is not removed in time, the gums will recede further, which can lead to loose teeth instead. Myth: Once you start cleaning, you have to keep cleaning later, a waste of money Regular “cleaning” is an important measure of oral health care, every six months to a year to the dental hospital for cleaning, not only can remove the brush can not get rid of tartar, plaque, pigmentation, thorough cleaning of the teeth, maintenance of oral hygiene, but also early detection of dental disease, in fact, is to save money. The most important thing to note is that teeth cleaning is not only a good way to remove tartar and plaque, but also to maintain oral hygiene, and to detect dental disease at an early stage. However, it is important to note that teeth cleaning should be trained dentists, poor technology, operation of non-standardized teeth cleaning, not only can not achieve the purpose of teeth cleaning, but also accelerate the deposition of tartar. Myth: dental cleaning will be infected with hepatitis B and other infectious diseases At present, the Ministry of Health on the oral treatment of infection control attaches great importance to the development of a high level of disinfection of oral instruments, sterilization requirements, in the regular dental hospital, disposable supplies such as mouthwash cups, gloves, masks, instruments to avoid contamination of the membrane, etc. to implement the “one person, one to use one to discard”, for contact with the patient’s saliva or blood instruments. For instruments that come into contact with patient’s saliva or blood, “one person, one disinfection (sterilization)” is implemented. Dental scaler heads and handpieces can be cleaned and sterilized through the pre-vacuum sterilization method to reach a sterile level, so as to prevent the transmission of blood-borne infectious diseases (such as AIDS, Hepatitis B, Hepatitis C) between patients through dental scaler heads and handpieces.