The child is 8 years old and has lost his teeth for one year, but he has not grown any teeth yet, which may be caused by factors such as not reaching the time of eruption of permanent teeth, blockage of permanent teeth, lack of calcium, and lack of permanent teeth embryo.
1. Before the time of eruption of permanent teeth: if a child loses his teeth due to dental caries, he will not have his teeth yet because of the time of eruption of permanent teeth, which will lead to the lack of teeth until now.
2. Obstructed permanent teeth: When milk teeth are lost before they should be lost, the neighboring teeth on both sides will be tilted to the gap of missing teeth, making the gap of missing teeth smaller, resulting in late eruption and obstruction of permanent teeth due to insufficient gap.
3. Calcium deficiency: Calcium is the main component of the teeth and helps in the development of the teeth, if the child is deficient in calcium due to insufficient intake of calcium and other factors, it can also cause delayed eruption of permanent teeth.
4. Lack of permanent tooth embryo: If there is no corresponding permanent tooth embryo underneath the lost milk teeth, it will also cause no permanent tooth eruption.
In addition, dental tumors and cysts can also prevent the eruption of permanent teeth. It is recommended that the child should consult the doctor in time to rule out non-disease factors and then take active treatment.