Hello, yabeikang dental experts will answer your questions. Orthodontic tooth extraction is not good for children. Orthodontic treatment in children is generally in the early stage of permanent dentition. Medically, the dentition is crowded and the occlusion is abnormal. Because the number of teeth is greater than the number of bones. The purpose of tooth extraction is to adjust the balance with bone mass by reducing the number of teeth. However, the child's development will not be basically completed until he is about 20 years old. During this period, the increase of bone mass plays a very important role in the balance between the number of teeth and bone mass. Orthopedic tooth extraction will affect the chewing efficiency, and with the development of children and the growth of maxilla and mandible, the 1/3 part below the face may be too depressed, which will change the good appearance after correction. Obviously, it is unreasonable to perform irreversible treatment such as tooth extraction too early.