Children usually begin to change their teeth around the age of six.
It continues until the child is about six years old, when the permanent teeth begin to replace the milk teeth, when the first permanent teeth erupt, i.e., children begin to change their teeth. At the age of 12 the second permanent molar erupts. The third permanent molar appears at about 18 years of age, so adults typically have 28 to 32 teeth, and some people do not have a third permanent molar.
The timing and order of tooth replacement varies from individual to individual and is mainly related to endocrine, food stimulation and hereditary factors. During tooth replacement, it is recommended to eat foods rich in vitamin D and calcium, such as milk, eggs, shrimp, seafood, etc., in order to facilitate the growth of permanent teeth.
If the child out of the tooth replacement time delay, it is recommended to consult a doctor in time to rule out abnormalities, in order to ensure that the child’s normal growth and development.