A child’s teeth that have not grown in for several months is not necessarily a calcium deficiency. Premature loss of milk teeth can be caused by the rapid resorption of the roots after the impact of external forces on the milk teeth and periodontal shock. The permanent teeth lack the induction of the roots of the milk teeth, and their position becomes skewed and cannot be exposed in the mouth for a long time, and they may also erupt in the wrong position. If the lost tooth is a multiple tooth or congenitally lacks a permanent tooth germ, there is no inherited permanent tooth below the tooth and no tooth will erupt after the tooth is lost. If the child’s growth is slow and the child’s diet is homogeneous, the development of the tooth germ may be delayed due to a lack of calcium and other elements, and the tooth may erupt a little later. You can let your child eat more fresh vegetables, fruits and nutritious eggs and meat to replenish vitamins and trace elements such as calcium and zinc in time to promote rapid eruption of teeth.