Some friends think they are diligent in brushing their teeth, but they still have a layer of black calculus on their teeth, and they can’t get rid of it even with a dental cleaning. I feel so unattractive. The problem of growing calculus even after brushing your teeth. First of all, we need to tell you that even if you brush your teeth diligently, you can’t get 100% clean, so you need to have your teeth scaled regularly to remove calculus and so on. So far, there is no dental calculus that cannot be washed away. If in doubt, it is recommended to go to a hospital or clinic for examination. Some time ago, Weibo and the circle of friends were swept by the same thing. Only then did we realize that the original dental treatment DIY has been Internet + N! The original “dental really profitable”, thousands of porcelain teeth, a few dozen can be done, but also without queuing! Can be an important achievement on the Internet Conference show! In contrast, the “Sanming” model is simply weak! Seems to be off-topic, as a pediatric dentist, or not delusional for good! Let’s get back to the subject. The importance of teeth is only gradually being taken into account as a result of continuous improvement and scientific research. But since milk teeth can usually be replaced, many people think it’s better to wait until they replace them! In fact, if you think about it, the reason why there is such a market for DIY is that, in addition to economic reasons, fear of dentistry also plays a role. Today we will talk about “dental fear”. Fear is one of the six basic emotions of human beings. It is a strong and depressing emotional experience of being scared when facing a dangerous situation and trying to get out of it without being able to do anything about it. Fear is commonly referred to as “fear”. To understand the emotion of fear, we must explain the three aspects of “experience, physiological and external behavior changes”: 1, the components of experience: that is, the real feelings generated inside, which can be personally experienced, but also from the family and friends around to get. Specifically, dental fears, unpleasant medical experiences of ourselves or others, rumors spread on campus, etc. can make us fear 2, the physiological component, high-speed heartbeat, shortness of breath, sweating and other changes in some of the functions controlled by the autonomic nervous system. 3, external behavioral changes, most notably changes in facial expressions, eyebrows upward, tension, eyes wide open, staring directly at the stimulus, in children are more often manifested as gnashing of teeth, pouting, frowning, shouting, and even crying. Pain is one of the main causes of “dental fear”, which is physical, but more psychological! This pain is physical, but more psychological! More care and psychological intervention is needed!