In daily life, we often hear a saying: "If you want to eat well, you need healthy periodontium." However, not everyone follows this common sense to practice. According to a survey by the China Dental Foundation, over 85% of adults in China suffer from periodontal disease. So what should be done to protect periodontal health? In fact, the simplest way in life is to wash your teeth regularly. Teeth cleaning is the process of removing accumulated dirt on the surface of teeth, such as tartar, plaque, attached pigments, and food residue, in order to restore the cleanliness of the teeth. The most commonly used method for teeth cleaning at present is ultrasonic high-frequency oscillation teeth cleaning, sometimes combined with the use of manual instruments to clean teeth. Many people have an instinctive aversion to dentistry and become nervous when they hear squeaking sounds, so even when it comes to cleaning teeth, some people worry and ask various questions. Some people may ask, do I still need to wash my teeth regularly after brushing my teeth two or three times a day? Although we brush our teeth on time every day, we may not be able to brush every corner of our teeth clean. A toothbrush can generally remove about 65% of dental plaque. For crowded and misaligned gaps, there will still be a small amount of food residue left inside, which will accumulate over time and form tartar blocks in the gaps. At this time, it is necessary to go to the hospital for dental cleaning to remove the tartar. Someone asked, if your teeth are not uncomfortable, do you still need to wash them? Of course it is necessary. If you wait for your teeth to feel uncomfortable, such as bleeding from brushing, swollen and painful gums, or loose teeth, then it will be too late to wash your teeth. Because most loose teeth cannot be restored, and gum recession caused by gum swelling and pain cannot be restored, it is necessary to develop a good habit of regular teeth cleaning to prevent further development of gingivitis and periodontitis in a timely manner. Many people are worried that washing their teeth will harm them. In fact, the surface of teeth is highly calcified enamel, containing 96% inorganic salts, mainly composed of calcium phosphate and calcium carbonate, which are the hardest tissues in the human body. Observing the surface of teeth after teeth cleaning with a microscope magnified by 30 times, the enamel remains smooth without any indentations. However, non-standard ultrasonic tooth cleaning operations may damage the enamel, so it is necessary to go to a regular hospital for tooth cleaning. Some people may feel that their teeth are sensitive to cold acid after teeth cleaning. In fact, this is because before teeth cleaning, tartar adheres to the tooth surface for a long time, blocking direct contact between the teeth and external cold acid stimulation, and reducing the sensitivity of the teeth. After teeth cleaning, the tartar is removed all at once, and the tooth surface is exposed to the external environment again. Exposure to cold acid stimulation can cause sensitivity. Therefore, after teeth cleaning, it is important to avoid contact with excessively cold and hot food, use warm water to brush your teeth, and provide a process of adaptation for a clean tooth surface. Some people feel that after washing their teeth, the gaps between them have become larger and the teeth have become loose. What's going on? Before teeth cleaning, long-term accumulation of tartar in the gaps between teeth can cause gum recession. After removing all the tartar during teeth cleaning, the gaps between teeth become empty, leading us to mistakenly believe that they have become larger. It should be emphasized that even if you feel that the gaps between your teeth are widened or your teeth are loose after cleaning, you should still insist on regular teeth cleaning. Because if tartar is not removed in a timely manner, the alveolar bone will be further absorbed, and the gums will also shrink further. At that time, people are likely to suffer from severe periodontal disease, which will eventually lead to teeth