1, “I brush my teeth carefully every day, no periodontal disease, no need to clean my teeth.” Brush your teeth well again, inevitably there will be dead space, over time will form tartar, especially some people with uneven teeth, long-term smoking and tea drinking. Once tartar is formed, it is easy to accumulate disease-causing bacteria, which in turn causes periodontal inflammation, and over time, it will also affect your health due to periodontal inflammation. Therefore, it is best to clean your teeth once a year, easy to grow tartar periodontitis patients better half a year or even 3 months to clean once. 2, “Scaling will make the teeth loose.” This situation is easy to occur in patients who have more tartar. In fact, the loosening phenomenon is not caused by the scaling itself. These patients have heavy periodontal disease, the alveolar bone has been resorbed, the periodontal fibers are destroyed, and the teeth have been loosened. Due to the “splint effect” of the tartar and the temporary “support”, the teeth usually do not feel loose. After the tartar is “washed off”, the teeth become “isolated”, so the looseness reappears, in fact, the scaling is to remove the factors that cause the teeth to loosen, and then the loose teeth should take further periodontal treatment. 3, “After scaling, the teeth will be painful.” Generally there will be two kinds of pain: one is the soreness during the scaling process. Tartar often collects in the gum margin and the neck of the tooth, which is weak and close to the dental nerve, so you will feel sore when scaling. Another kind is that some people will feel sensitive to hot and cold stimuli for a period of time after scaling. Before the removal of tartar blocked the external stimulation, after the removal of these sensitive factors through the tooth structure of some channels directly stimulate the dental nerve, there will be sensitive symptoms, but this symptom is temporary, a few days or a week or two later will gradually disappear. 4, “Scaling can damage teeth.” The ultrasonic scaling head itself has no cutting function on the teeth, and the correct standardized operation will not damage the teeth. However, if the operation is improper, such as pressurization or staying in one part of the tooth for too long, slight scratches will appear. Polishing is generally required after scaling, which can make up for some fine rough surface, otherwise it is easy to pigmentation or deposition of tartar. 5, “Scaling will bleed a lot.” In fact, the amount of bleeding is often a reflection of the degree of inflammation, this situation is similar to brushing bleeding, you can’t stop brushing or scaling because of bleeding, on the contrary, only serious brushing and scaling can eliminate inflammation, and bleeding will be reduced or disappear after inflammation is controlled or eliminated. In addition, the water and saliva sprayed from the head of the teeth cleaning machine mixed in the scaling will also cause the illusion of a lot of bleeding. 6. “The gap between teeth has become bigger and teeth have grown longer after scaling.” Tartar accumulation and gum inflammation will lead to local swelling of the gums to fill the gaps, after scaling, the tartar is removed, the swelling of the gums gradually recedes, the gaps become obvious, the tongue licks up the outline of the teeth is more obvious, and it feels like the teeth have become longer. 7. “Scaling process is easy to transmit diseases.” This topic is most often mentioned, but in fact, as long as you go to a regular medical institution, choose a professional doctor, and sterilize the instruments strictly, you can avoid infectious diseases. 8. “Tooth cleaning is to give teeth beauty.” In fact, scaling is a common term, the professional term “scaling”, is not a simple cosmetic act, but a strict medical act, is the basis of periodontal disease treatment, only choose a professional operation, in order to standardize the treatment, but also to reduce the discomfort during the process, to avoid cross-infection.