First, the teeth will not fall off. Teeth will loose from the root to fall off, usually lasting for several months, and will fall off if you are not careful, such as when eating. However, some teeth are like a tied thread that will never fall out. At this time, it may affect chewing or make children feel unhappy. In this case, you can ask the child to try to turn it around. If the root of a tooth falls off completely, a slight rotation will make it fall off, but it must not be forced, let alone yanked, because if only half of the root falls off, the consequences of forced pulling are easy to cause injury and infection. Second, it hurts a little. The process of tooth loosening and falling off is generally painless, but as the deciduous teeth begin to fall off, the child's "six-year-old teeth" will grow out, which may cause gum swelling and make the child complain about toothache. If the child has severe pain and needs to see a dentist, the doctor will decide whether it is necessary to diminish inflammation and relieve pain. The newly erupted permanent teeth may not be as white as deciduous teeth, but the difference is so subtle that almost no one will notice. Moreover, don't be surprised that children's new "big teeth" look incongruous with their faces, because their heads will continue to develop and their permanent teeth will not grow again. After all, it takes a process to change teeth. During this period, children may complain that they can't chew, but even if they don't eat well, they should ensure a reasonable and balanced diet. At this time, parents can make some foods that are easy to chew and swallow, such as vegetable soup and broth, to ensure the needs of the body, and encourage him to brush his teeth and clean his mouth. Premature delivery: Generally, children's first tooth falls off at the age of 5-7. If the teeth fall off before the age of 4, it is usually caused by internal reasons, which may be systemic or just local oral reasons, such as metabolic disorder or periodontal disease. Fourth, how long does it take for the teeth to loosen and finally fall off? The time for deciduous teeth to fall off is not fixed, which depends on the absorption degree of deciduous teeth roots when permanent teeth erupt. And some depend on the position of permanent teeth or whether the deciduous teeth have been traumatized. Sometimes this will lead to the root of deciduous teeth can not be completely reabsorbed, so that deciduous teeth can not fall off on their own, and dentists need to take them out by surgery. Some children can't wait for their permanent teeth to come out before their primary teeth fall off, resulting in two rows of teeth. This is not a rare phenomenon, but a "double tooth" phenomenon that often occurs when children change their teeth. This is probably caused by the root of deciduous teeth not being completely reabsorbed. Doctors can generally determine the relative position of deciduous teeth and permanent teeth through oral X-ray photography to help him diagnose whether deciduous teeth can fall off or need to be pulled out. Once deciduous teeth fall off or are pulled out, permanent teeth usually grow to the correct position, but if there is not enough room for permanent teeth to grow, early intervention is better than later correction. 5. Congestion of deciduous teeth will cause the problem of permanent teeth arrangement. Generally speaking, the reason for the crowding of permanent teeth is the contradiction between the width of the teeth themselves and the width that the dental arch can provide. Because the size of teeth has been determined long ago, the width of dental arch is generally set before the age of 3, so whether permanent teeth are crowded or not is related to the space between deciduous teeth. But it is not absolute, because the permanent molars that children grow will be smaller than the deciduous molars, which will prepare a little space for other teeth. If necessary, you can use this space to relieve the crowding of front teeth, which depends on the advice of dental plastic surgeons. Sixth, the problems that children should pay attention to during tooth replacement 1: Whether deciduous teeth are stuck or fall off has a certain time and order, and it should not be called deciduous teeth. The consequence is often that permanent teeth can't erupt in the normal position. Most children start to change their teeth at the age of five or six, and some children start at the age of four. Some children will lose their first deciduous teeth at the age of seven. Tooth loss usually begins with the next two incisors, and then the last two incisors. The most common is that the lower front permanent teeth grow on the inner side of deciduous teeth, and the upper front permanent teeth grow on the outer side of deciduous teeth, which looks like double-layer teeth. What should I do in this situation? Children should be taken to the hospital as soon as possible to remove the stranded deciduous teeth and make room for the eruption of permanent teeth. If the deciduous teeth fall off before they should, it is called premature deciduous teeth fall off, which often leads to the adjacent teeth on both sides leaning towards the gap of missing teeth, which makes the gap of missing teeth smaller, and the permanent teeth sprout out of position due to insufficient gap. At this time, it is necessary to wear a gap retainer (made by hospital stomatology) at the gap of deciduous teeth to prevent the teeth on both sides from tilting, so as to keep the eruption position of permanent teeth until the permanent teeth erupt. Note 2: Is it difficult for permanent teeth to erupt? Premature deciduous teeth fall off. Children are used to chewing and licking their gums, which will thicken and hinder the eruption of permanent teeth. Therefore, if the child has reached the age of changing teeth and the permanent teeth have not yet grown out, it is necessary to take the child to the hospital for examination in time and get the help of the doctor. Calcium deficiency in children is also an important reason for delayed eruption of permanent teeth. Parents should give their children calcium supplements in time. When changing teeth, the front permanent teeth erupt from below or inside the deciduous teeth, and the erupted permanent teeth are the size of adult teeth. It is normal to have slight crowding and torsion, which can be adjusted by itself with the eruption of adjacent teeth and the growth and development of jaw. As long as it is not malocclusion, it is generally not necessary to correct it, but it should be observed regularly for no more than half a year. If the arrangement of deciduous teeth is still uneven after complete replacement, you should see a doctor in time to avoid delay in treatment and cause correction difficulties. Note 3: Correct your child's bad habits. In the process of tooth replacement, deciduous teeth and permanent teeth exist at the same time, and permanent teeth just erupt, especially the "six-year-old tooth" which is the "occlusal key", has a large volume and many pits on the occlusal surface, and is easy to retain food residues. In addition, most children do not brush their teeth thoroughly and are prone to dental caries. The most important thing at this time is to teach children to brush their teeth correctly. In the process of changing teeth, when deciduous teeth are loose and about to fall off, children are often used to licking loose teeth with their tongues. This is a bad habit, which will affect the normal eruption of permanent teeth and should be corrected in time. Note 4: Malocclusion of teeth will affect the child's appearance. During the tooth changing period, the teeth are replaced, the jaw is developing, and then the occlusal relationship is gradually established. Sometimes there will be temporary malocclusion, and in the process of tooth development, it can often adjust itself and return to normal. Some malocclusion deformities, such as the gap between the upper teeth caused by the low labial frenum position of the upper lip, cannot be adjusted by itself, which will affect the facial development. You should go to the hospital for treatment, otherwise it will affect the child's appearance. Precautions 5: Prevention and treatment of deciduous molars: deciduous molars are prone to dental caries, such as apical caries, which can affect the growth and eruption of secondary permanent teeth. Therefore, we should pay attention to the timely treatment and prevention of deciduous teeth caries, and we must not have the wrong idea that "deciduous teeth will be replaced sooner or later, and if they are broken, there is no need to treat them." The doctor suggested that the deciduous teeth should be preserved as much as possible until the permanent teeth erupt. If deciduous teeth are missing prematurely, it will often lead to insufficient eruption space for secondary permanent teeth, resulting in uneven dentition. Note 6: When changing teeth, eat chewy food. When the child is about six or seven years old, permanent teeth will begin to sprout one after another, replacing the original deciduous teeth. Although some children's permanent teeth have erupted, primary teeth often refuse to "give way", forcing permanent teeth to grow out of the inner side of primary teeth, forming "double-layer teeth", resulting in irregular arrangement of permanent teeth. There are many reasons for the delay in extraction of deciduous teeth. The most common thing is that children eat too carefully and do not give full play to the physiological stimulation of teeth. The main function of teeth is to chew food, which can promote the growth, natural absorption and shedding of milk roots.