First, control sweets, why there are still caries? It may be hard for you to imagine that in pediatric dentistry, almost 80% of children’s problems are related to dental caries. The results of the third national oral health epidemiological survey showed that the rate of caries in the milk teeth of 5-year-old children in China is 66%, which is at a high level in the world, and the rate of caries in the permanent teeth of 12-year-old children has reached 29%, and the results of the questionnaire survey of parents showed that only 9% of parents are able to supervise and help their children to brush their teeth every day. In most people’s opinion, sweets are the culprit of dental caries, so some parents will consciously control their children to eat sweets, but this is not enough. Food debris embedded in the cracks and grooves of the teeth is still a time bomb. In this case, apart from brushing their teeth diligently, a safer way is to go for fossa sealing when your child is around 6 years old. This is a method recommended by the World Health Organization to children all over the world to protect newborn permanent teeth. Second, how to help children use fluoride toothpaste? Fluoride toothpaste can prevent cavities, but will swallowing the toothpaste when the child brushes cause chronic fluorosis? This has been a part of the parents worried. In fact, it is not necessary. Cochrane Oral Health Group at the University of Manchester, England, for the world 73,000 children conducted a survey, the results found that the child used a small amount of fluoride toothpaste before the age of 1, the chances of dental fluorosis is very small, and with fluorosis produced by the impact of dental caries caused by caries compared to the problem is much more serious. The study also found that children only develop dental fluorosis after swallowing large amounts of fluoride toothpaste over a long period of time. So as long as the amount is controlled, the benefits of fluoridated toothpaste outweigh the drawbacks. Generally, children can be used after the age of 3 years, give a pea-sized amount can be. What is dental fluoride all about? Is it good for teeth? Dental fluoride is a fluoride treatment that the dentist applies to the surface of each tooth with a fluoride-containing substance. After this treatment, the fluoride inhibits the growth of bacteria in the mouth, and at the same time prevents them from fermenting the leftover food in the teeth and between the teeth. As a result, it does not produce acids that corrode the calcium of the teeth, and it also helps to repair teeth that have just been decalcified. This is a very effective method of preventing dental caries, which has been carried out abroad for many years and has become a routine method of children’s dental care. Many parents are not aware of this fluoride treatment and are skeptical. Anti caries fluoride is a very effective way to prevent dental caries, its role lies in: 1, inhibit harmful bacteria: fluorine can directly inhibit the growth of bacteria in the oral cavity requires energy metabolism, inhibit bacteria to the tooth surface adhesion, inhibit the bacterial metabolism process of a variety of enzyme activities, so that bacterial growth, metabolism disorders or stop. 2.Enhance the resistance of teeth: fluorine and tooth enamel structure of hydroxyapatite combination, reduce the solubility of the enamel surface, enhance the resistance to acid. Therefore, anti-caries fluoride coating is like putting on a layer of protective clothing for teeth, which can effectively protect teeth and prevent caries. 3, strong teeth: children’s newly erupted teeth to strengthen the calcification, so that they become strong, can prevent the teeth from incomplete. 4.Repairing tooth decay: If early caries occurs in children’s baby teeth, there can be re-calcification after applying fluoride. Therefore, it has the role of repairing dental caries and can also reduce the cost of dental treatment. 5, reduce allergies: Nowadays, there are many children’s teeth are allergic to cold, hot, sour and other flavors of food, teeth can prevent dentin allergies after fluoride coating. Children’s dental caries fluoride treatment is generally divided into six steps: 1, clean the tooth surface: children are instructed to brush their teeth before applying fluoride protective varnish in order to remove plaque and food debris on the tooth surface. 2. Wetting and drying: After wetting with cotton gauze rolls, the surface of the teeth is dried with large cotton swabs or cotton balls. 3. Fluoride application: Use a small brush dipped in fluoride protective varnish and apply it to the surface of the teeth. 4.Open mouth for 1 minute: The solidification time of the fluorine protection varnish is 1 minute. 5.After applying: It is instructed not to rinse the mouth or eat for 45 minutes after applying the varnish. 6.Regular anti-caries fluoride coating: 4 times per year. Long-lasting effect, full penetration, can protect all parts of the teeth Method of applying dental fluoride Dentist will apply fluoride with fruit flavor to the surface of the teeth, and it only takes 1 minute each time. It is painless for the baby and is especially effective for newly erupted teeth. Half to one hour after fluoride application, baby should not drink water. Fourth, eat fine, malocclusion and milk teeth stagnation of more children Now more and more children to do orthodontic treatment, which in addition to the parents of the importance of the degree of improvement related to another indisputable fact is that the malocclusion of the children increased. Although malocclusion is affected by certain genetic factors, but according to clinical observation, more than 50% of children’s malocclusion is due to bad habits, such as long-term thumb-sucking may prevent the normal eruption of the front teeth, the replacement of children commonly used tongue lick the lower front teeth, the lower front teeth can be tilted forward to appear gap. Eating soft food for a long time, the chewing function of children’s teeth can not be played, the function of the muscles of the face and mouth is weakened, and its stimulation of the jawbone is also decreased. Insufficient development of the jawbone will appear a contradiction, that is, the narrow jawbone can not accommodate all the teeth in the alveolar bone neatly arranged. Especially in early childhood, chewing directly stimulates the development of the human jawbone, which, once underdeveloped, can lead directly to crowding and misalignment of the incisors. In addition, this refined diet also increases the number of children with retained and late loss of milk teeth. Under normal circumstances, children from about six or seven years old, milk teeth will naturally fall out, about half a year to a year between the permanent teeth erupt one after another. However, many children nowadays do not lose their milk teeth when they are supposed to fall out, and the newly erupted permanent teeth are forced to grow on the inside, forming a “double layer of teeth”. This is called retained milk teeth. If the stagnation and late fall of milk teeth is serious, it affects the eruption of permanent teeth and misalignment, etc., which may affect the child’s bite and the normal development of the face. So those who are used to cutting the fruit into pieces and letting the child eat with a toothpick should pay special attention to the parents, and give the child a whole apple for him to “gnaw” is the right choice.