How old did the child start to change his teeth? What should I eat during tooth changing?

Children generally begin to change their teeth at about 6 years old, and most of the first deciduous teeth fall off at about 6 years old, until 12 ~ 13 years old, all deciduous teeth fall off and permanent teeth are replaced. But some are as early as 4 years old and as late as 7-8 years old, so don't worry. Natural deciduous teeth have no roots, and their surfaces are gnawed. Parents should pay attention to observation and don't confuse it with deciduous teeth.

Children * * * have 20 deciduous teeth, and when they change teeth, they will change them one by one. The order is lower incisors and upper incisors, followed by two next to lower incisors and two next to upper incisors. The time span between teeth is different, so parents don't have to be too serious. Physiologically, the natural replacement of deciduous teeth and permanent teeth is the best, but when the new permanent teeth have grown out, but the corresponding deciduous teeth can't fall off for a long time, you need to go to the hospital to remove them with the help of a doctor, otherwise it will affect the growth position of the new permanent teeth.

Children change their teeth from about six to about 12 years old, and 28 teeth will grow together, which varies from person to person. Generally, the number of wisdom teeth is 0-4, and all 32 teeth will grow together around the age of 20.

What nutrition do you need to supplement during tooth changing? 1, protein

Teeth are made up of many different tissues. Protein is a nutrient for dental matrix, a raw material for dental organic matrix and a necessary medium for calcification. Lack of protein can lead to incomplete tooth formation and calcification. Chicken, fish, meat, eggs, tofu and other foods contain more protein. It should be necessary for children to eat eggs every day (please follow the doctor's advice if you are allergic to eggs).

2, the main minerals needed for teeth

Calcium: Calcium is the main component of teeth. If the intake of calcium is insufficient or the metabolism of calcium is disordered, it will become loose and more susceptible to corrosion. Milk, milk powder, cheese, tofu and other bean products are rich in calcium. In particular, the proportion of calcium and phosphorus in milk is appropriate, which is conducive to human absorption and should be eaten more. In addition, the calcium content of dried shrimps, bones, mussels, Nostoc flagelliforme, kelp, Undaria pinnatifida, laver, fish floss and egg yolk powder is also rich. In addition, when cooking calcium-containing food, put some vinegar properly, which will help the dissolution of calcium and be more conducive to human absorption.

Phosphorus: Phosphorus is an indispensable nutrient to keep teeth strong. Phosphorus is widely distributed in food, and meat, fish, milk, beans, cereals and vegetables are all rich in phosphorus.

Fluorine: Fluorine is an important element of dental health and necessary for the normal development and calcification of teeth and bones. Taking a few milligrams of fluoride every day has a positive effect on the formation of tooth hard tissue, the deposition of bone calcium and the prevention of dental caries. However, excessive intake of fluoride can also cause dental fluorosis, so fluoride intake should be moderate. Marine fish, tea, honey and mineral water are all rich in fluorine.

3, vitamins

Vitamin D: Vitamin D is related to calcium and phosphorus metabolism and can promote the absorption and ossification of calcium and phosphorus. Without vitamin D, the matrix of enamel can not be calcified normally, which leads to the atrophy of ameloblasts and the depression of matrix. The main source of vitamin D is cod liver oil, and there are also small amounts in meat, eggs and poultry.

Vitamin a: when vitamin a is seriously deficient, it can cause enamel hypoplasia, enamel atrophy and ameloblast deformation, and also have a certain impact on dentin cells and dentin. Usually, we should pay attention to taking vitamin A from milk, butter, egg yolk, animal liver and green vegetables.

Vitamin C: The content of vitamin C in human body is sufficient, which is an important condition to prevent periodontal disease. Lack of vitamin C will reduce the density of teeth, make teeth decay easily, loosen teeth, and make gums bleed easily, which will lead to periodontal disease. Fresh green vegetables and kiwifruit, dates, oranges, oranges and hawthorn all contain a lot of vitamin C.

What should children eat during tooth changing? In view of these problems, pay attention to the comprehensive supply of nutrition in combination with children's own physical quality:

If the child has good nutrition since childhood, he can pay attention to his usual diet and eat more fish, beans, meat and foods containing vitamins B and C.

If the child is usually undernourished, then special attention should be paid at this time. In addition to increasing nutrition in the usual diet, children should also be given some milk powder.

The various nutrients in milk powder are more comprehensive, which is more beneficial to children's absorption than pure milk. Some experts believe that children should drink until they are at least 7 years old.

Appropriate supplement of a certain amount of calcium.

Bone grows and develops rapidly in childhood, and if it is deficient in calcium, it will have serious consequences. Children need a lot of calcium to change their teeth. If calcium is not absorbed enough, it will cause uneven teeth and teeth are prone to dental caries.

Under normal circumstances, food supplements are still advocated. For example, shrimp skin, kelp and fish are all good calcium supplements, and calcium agents can be added when necessary.

Eat some hard food properly.

Many parents believe that children should eat more soft food during tooth changing, which is actually not conducive to the development of jaws. Jaw is the bone and muscle tissue that constitutes the upper and lower mouth, and the bone in jaw is called jaw. Proper chewing is beneficial to stimulate jaw development, otherwise it may cause jaw dysplasia.

At this time, vegetables should not be cooked too badly, rice should not be cooked too soft, and fruits should not be cut into small pieces, so that children can chew their teeth better. In addition, some chewy foods are also very good, such as biscuits, sugar cane, peanuts, green beans, pot stickers and so on. Don't shut these foods out because you are worried about your child's loose teeth.

On the one hand, proper chewing can help children "pull out" loose teeth that have not fallen off; On the other hand, proper chewing is helpful to the development of jaws, giving new teeth plenty of room to grow, and laying the foundation for having a beautiful and tidy tooth in the future.

Eat less sugar during tooth changing.

The child began to change his teeth at about six years old. Eating sugar when changing teeth is the chief culprit of tooth decay. Look at Dingding, Angel's son in "Mom is Superman", because he loves to eat sugar when changing his teeth, and his tooth decay is very serious. However, Bian Xiao does not recommend not eating sugar. After all, sugar has the function of providing energy and catabolism, so it is recommended that children eat less sugar, eat a little glucose during tooth changing, and must brush their teeth after eating sugar.

Don't take tetracycline drugs.

Tetracyclines have become the standing drugs in many families because of their wide curative effects, but children under 8 years old should not take them to avoid yellowing teeth and causing drug-induced tetracycline teeth.

The reason of tooth discoloration is that human calcium ions have special affinity with tetracycline drugs. When they combine with calcium in tooth tissue, they will produce a yellow compound of tetracycline, calcium and phosphate, which will dye the inside of teeth yellow (internal coloring). This compound itself is pale yellow, but under the action of ultraviolet rays, it gradually changes from yellow to brown, brown or brownish gray, which is also commonly known as tetracycline teeth.

Tetracyclines are a large family, including tetracycline, oxytetracycline, chlortetracycline, metamycin and doxycycline. These drugs are broad-spectrum antibiotics, which are not only widely used in clinic, but also easily available in pharmacies. The damage degree of tetracycline drugs to teeth mainly depends on age and dosage. Children under 8 years old have permanent teeth, and their teeth are in the stage of development and mineralization. If tetracycline drugs are used at this time, tetracycline will be deposited in the places where the calcification of teeth and bones is active, which will not only cause the color change of teeth, but also may be accompanied by mild enamel and dentin hypoplasia.