How often do children change their teeth?

Babies usually start to grow full teeth between the ages of one and two, and start to replace their teeth again when they are five or six years old. The teeth that grow during this period are called permanent teeth. Permanent teeth continue to grow in a person's body until they fall out in old age. Therefore, many parents are more concerned about the issue of children's tooth replacement. For example: How many times do children usually change their teeth? How long does it take to change teeth? What should be done when changing teeth?

Tooth replacement is the process of deciduous teeth falling out and permanent teeth growing in. During the growth and development process, there is a permanent tooth germ under the root of each deciduous tooth, which gradually develops and grows. During the eruption of the permanent tooth, on the one hand, it compresses the alveolar bone between the deciduous tooth root and the permanent tooth germ, and through the action of osteoclasts, the bone is absorbed and thinned until it is completely absorbed; on the other hand, it directly compresses the deciduous tooth root, causing the deciduous tooth root to gradually absorb, become shorter and shorter, until it disappears completely.

Normally, at the age of 6 to 7, the deciduous central incisor (central front tooth) of the mandible begins to shake and fall out, and soon the permanent central incisor grows in this place; at the same time, the first molar grows behind the second deciduous molar. After that, the other teeth were replaced one after another. The permanent monocuspids and bicuspids can only grow out after the deciduous teeth in the same position fall out. By the age of 12 to 13, all the deciduous teeth have fallen out and have been replaced by permanent teeth. After that, permanent teeth will grow separately: the second molar will grow behind the first molar at the age of 12 to 14, and the third molar will grow after the age of 18. It is normal for some people to not have third molars.

The order and timing of tooth replacement are roughly as follows:

Number of teeth and time of tooth replacement

4 central incisors 6-7 years old

4 lateral incisors 8-9 years old

First pair of canines 4 at 10 years old

Single canine 4 11 years old

Second canines 4 12 years old

First molars 4 at age 6

Some parents worry about uneven teeth. In fact, after the teeth erupt, the size of the crowns no longer changes, but the alveolar bone increases as the roots continue to develop, and the jawbone also grows larger.

In order to help children change their teeth more smoothly and quickly, parents should pay attention to their children's eating and living habits. When the child is about 10 years old, the front incisors and back molars have erupted, and parents can add some celery stalks, corn, apples and other foods to them to ensure a smooth tooth replacement and give the child a healthy and neat permanent tooth.