People have to grow teeth twice in their life, namely deciduous teeth and permanent teeth. There are 20 deciduous teeth, which usually start to sprout around 6 months, 28-32 permanent teeth (the number of wisdom teeth is 0-4) at the age of 2-3, which usually start to grow around the age of 6, and 28 wisdom teeth at the age of 12-13 (wisdom teeth vary from person to person), so the tooth change period is usually during the baby’s age of 6-12.

There are certain rules for changing teeth. In short, it is “a certain time, a certain order, left-right symmetry, first down and then up”. Left-right symmetry, first down and then up, is for the teeth of the same name.

Most children are excited when they feel a tooth moving. However, some children worry about whether it will hurt when they lose their teeth. If your child is also worried about this problem, you can tell him that he may not feel anything and reassure him.

First, the first long teeth fall out first

Each child has 20 deciduous teeth, which are generally neat by the age of 3. These 20 teeth usually fall off in the order in which they grew. In other words, the lower incisors usually fall out around the age of five or six, and then the upper two incisors. If it were not for the lower permanent teeth to push the deciduous teeth upward and take up its place, the deciduous teeth would generally not move. Some children lose their first tooth as early as the age of 4, while others are as late as the age of 7. Usually, the earlier a child has teeth, the earlier he will lose them. [time and sequence of tooth replacement (Figure)]

Due to accidents or dental diseases, the baby may lose its deciduous teeth prematurely before the permanent teeth are ready to erupt. Sometimes pediatric dentists place a spacer gap holder (a special device for occupying space) at the position of the deciduous teeth that fall off too early before the permanent teeth are ready to grow, so as to prevent the teeth from growing too crowded in the future. If your child starts to lose teeth before the age of 4, you should take him to the dentist to check for potential diseases.

The baby may be seven or eight years old and haven’t changed his teeth. This may not be a problem, but it’s best to take your child to the dentist and take an X-ray to see if it’s normal.


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