Scaling may be the most unskilled craft you can think of, but it is a craft, and there is always a skill to it. Why do you come for a cleaning? Are your teeth unclean? Yellow teeth? Or do patients themselves feel that their periodontal period is obviously bad? Or have you heard that others have had their teeth cleaned, but you know nothing about it? Understanding this is fundamental for us to be able to serve our patients better. There are times when we may misunderstand some of the patient’s intentions, and in some cases, even do a disservice with good intentions. Not meeting the patient’s requirements, not understanding the patient’s meaning, and after the treatment is over, the patient feels that the results are very different from what he or she wanted, or that nothing worked. This can easily lead to a doctor-patient crisis of confidence. Pay attention to the systemic medical history: There are some diseases that are absolute contraindications to scaling. For example, pacemaker wearers. Of course, there is now a new type of pacemaker with a shielding function that is not prohibited. Also, long-term aspirin users must be careful with their first scaling. Most likely, the scaling will lead to spontaneous bleeding after the scaling, which may lead to deep infection in severe cases. Therefore, for this kind of patients, the first scaling can be done for a few teeth for observation and further treatment after there is no discomfort. Then there is the issue of scaling for infectious patients, which has been very controversial. Generally speaking, ultrasonic scaling is not allowed for infectious patients, mainly because of the contamination of the operating area and the office environment. However, this problem is the most difficult to control, and few patients come to the clinic with the initiative to state that I am a patient of …… infectious diseases. Therefore, infection control measures are very necessary. To address the patient’s question: Will scaling loosen my teeth? Will scaling wear away one’s dental tissues? The scaling is to remove the calculus, especially for the middle-aged and older patients with periodontal lesions. Nowadays, there is a lot of calculus on the surface of the teeth, which are all connected together and disguised as braces, and once these calculus are removed, the teeth will become loose. Take the simplest example. A small tree, when the wind blows, the whole tree may shake with it. If we pile up some big stones under the tree, the tree may not move so much, but after a few years, remove the stones, he will move even more, or even wither. Because of the accumulation of rocks, the land around the roots of the tree becomes saline, not so much nutrients, the roots of the tree are loose. It’s a very graphic analogy, but it’s a very similar truth, and the same goes for teeth. As for whether scaling will damage your teeth, I don’t need to say much about this. We all know that improper handling can damage teeth. But, can we all guarantee that we are doing it properly? Each patient has a different level of tooth sensitivity. For each patient, the frequency of application when scaling should be different. The frequency is also different for different parts of the teeth of the same patient, so do not use one power to the end. My teacher once said that the soreness and pain that patients experience during scaling can actually be avoided, and this is the most direct way to avoid post-operative sensitivity. The maximum power during scaling should be used in such a way that it does not cause tooth sensitivity in the patient. Let the patient talk and let him express himself as much as possible. We all resent sales pitches. When facing a patient, do not talk incessantly, it is likely that while you are talking, his errand is going nowhere. And that is easy to make the patient resist, produce rebellious psychology. Learn to listen, the effect will be different, so that the patient will feel that you respect him. People are like this, “you respect him a foot, he respects you a ten foot”. Let the patient feel respected, the next treatment and handling, is you guide him away.