“Diastema”, also known as anterior retrusion, is one of the most common clinical malocclusions. Anterior retrusion can occur in the milk teeth, mixed dentition and permanent teeth. Generally speaking, the earlier the orthodontic treatment, the better. Some parents think that it does not matter if the baby teeth are retruded, and that the retrusion will correct itself after the teeth are replaced. This is not true. The growth and development of the oral cavity, face, and jaws will be seriously affected by the anticlinal malformation, which will limit the development of the middle 1/3 of the child’s face and overdevelop the lower 1/3 of the face. If the teeth are not corrected during the milking period, the time for orthodontic treatment will be lost, and after the replacement of teeth is usually to continue to form the permanent teeth of the anticlinal, and the anticlinal face shape with the growth of age, making the deformity more and more serious. If not corrected during the growth and development period, grow into adulthood. Although it is possible to correct the anticlinal relationship of teeth with efforts, serious bony deformities must be corrected by surgery. Therefore, from the point of view of prevention, the anticlinal (ground-breaking) should be corrected as early as possible. There are also clinical cases in which the anterior teeth appear again after the correction of the malocclusion and after the eruption of the permanent teeth, and then the orthodontic treatment has to be performed again. However, it should be emphasized that although the anterior teeth of these patients are anticlinal, they are basically dental anticlinal, not bony anticlinal, and are relatively easy to correct. Therefore, it is still necessary to correct the malocclusion. In addition to the serious impact on the aesthetics of the patient, the patient’s chewing function is also greatly affected. The anterior teeth are unable to perform the cutting function, and due to the impact of the anticlusion on the jaw movement, it will also cause a significant decrease in the chewing function of the posterior teeth. In addition, it also affects the patient’s pronunciation function, making some sounds unclear and affecting communication and learning. To sum up, it is not possible not to correct the groundedness, and it should be corrected the earlier the better.