As the saying goes, “A toothache is not a disease, but a pain that kills you”. Many people have this experience, a small toothache can often be tossed to sleep and eat, restlessness. In the past, many people were able to tolerate it and forget about the pain when they got well. The actual can’t bear to simply pull it out, thought from then on to rest easy. However, in recent years, with the improvement of people’s diet structure, the incidence of dental disease is on the rise, dental health issues are increasingly becoming a hot topic of concern. Is toothache not a disease? The incidence of oral diseases is extremely high, and people inevitably suffer from different degrees of oral and dental diseases throughout their lives. Tooth decay, periodontal inflammation, gum redness, tooth loosening, etc. are the more common symptoms of oral and dental diseases, all of which can cause toothache. Especially, caries has become a worldwide problem because of its high incidence and has been listed as one of the three key diseases by the World Health Organization. Small cavity is not filled, big cavity is suffered As the saying goes, “Small cavity is not filled, big cavity is suffered”, dental disease should not be delayed for a long time without treatment. Director Wu introduced that small cavity can be treated once and the pain is not big, but if it is allowed to develop, and then lead to pulp disease and periapical disease, it not only needs to be treated several times but also often accompanied by severe pain and local swelling, and the pain is not small. A few chronic periapical, periodontitis, etc. as a focal point, bacteria through the bloodstream to invade other organs, but also cause, for example, bacterial endocarditis, nephritis, rheumatoid arthritis and other diseases. If the rotten root is not treated in time, the sharp tip can pierce the buccal or lingual mucosa and cause ulceration or even cancer. Even after extraction, the missing tooth should not be left to nature without restoration. Otherwise, after a long time, the teeth on both sides of the missing tooth will be tilted to the vacancy, causing food embedding in the teeth next to the missing tooth, which will easily lead to caries and periodontal disease. In response to the phenomenon that some parents neglect the health of their children’s baby teeth because they think the baby teeth will be replaced by permanent teeth, Director Wu reminds parents that decayed baby teeth or periodontal inflammation will affect children’s feeding, and if they fall out too early or too late, it will also affect the eruption and arrangement of permanent teeth, which may cause malformation. Therefore, she strongly emphasizes the need for early treatment of dental diseases in both children and adults. What should be done in case of any of these diseases? With the development of modern dental technology, the emergence of new technology materials, tooth bleaching can make yellow teeth white, part of the porcelain dental restoration can be retained on the basis of the residual crown and root by staking and other processing, from the form to the color to achieve the effect of falseness. If the metal hooks of movable dentures affect the aesthetics, through the invisible denture, precision attachment denture and other movable restorations can achieve the effect of both functional and aesthetic. Dental care in the usual prevention must be done in the usual oral health care. Take caries and periodontal disease as an example, Director Wu introduced the methods to prevent these two common oral diseases. The occurrence of these two diseases is related to plaque, which is a kind of adhesive gel-like substance with a large number of bacteria attached to the tooth surface, generally formed about 8 hours after meals, and is the main factor causing the disease. It is not visible to the naked eye and cannot be eliminated by daily rinsing, but can only be removed by effective and thorough brushing”. Therefore, she recommends using toothbrushes with softer bristles and toothpaste with delicate abrasives, and brush heads that fit the size of the mouth and are not too large. When brushing, avoid the long horizontal horizontal brushing method that most people are used to, which can cause wedge-shaped defects in the neck of the teeth and gum recession. The short horizontal brushing method, where the bristles are only chattered in the tooth surface and the tooth space for a short distance back and forth, or the vertical brushing method, can effectively remove plaque and soft scale and play an auxiliary massage role to the gum tissue. For the plaque and dirt between the two teeth, sometimes the toothbrush is not strong enough to floss. Most people are used to using toothpicks, which should be smooth and light to avoid hurting the gums. In addition, the impact of daily eating habits on the prevention of oral diseases. It is recommended to consume more fibrous foods that help clean teeth and massage gums, such as fruits and vegetables, and the diet should be coarse and fine, with as little snacks and sweets such as candy as possible. These should be especially important for people with a high incidence of caries who eat mainly refined sugar. As for the parents’ practice of sparing no efforts to supplement calcium for their children, that is, the lack of protein, calcium and phosphorus will affect the development of teeth during the period from 8 months to 8 years old, so attention should be paid to the balanced nutrition. Once development is complete, calcium supplementation is unnecessary. In the early prevention of malocclusion, proper breastfeeding posture of the mother and correction of children’s bad habits such as tongue licking, lip biting, finger sucking and pencil chewing can eliminate many malocclusions in the eruption stage. For this reason, regular oral monitoring and teeth cleaning becomes a necessity. Children can have a special oral examination at the age of about 3 years old to receive oral hygiene instruction, while adults should be examined once every six months to a year. The pursuit of a high quality of life for people living in modern society has become more and more of a consensus. Caring for dental health is more important to their own body into the “micro”.