What causes children not to have teeth?

Children do not erupt at the age when teeth should erupt, which may be due to soft food, insufficient chewing stimulation or physiological stimulation during tooth eruption, and slower tooth eruption. It may also be due to an individual difference in tooth eruption. Some children grow teeth earlier, while some children grow teeth later. If it is beyond the age at which normal teeth should erupt, you can take apical films of the teeth and observe whether the eruption direction of the underlying permanent tooth germ is normal or whether there is a possibility of congenital absence of permanent tooth germ. If there is congenital absence of teeth, there will be no tooth eruption.