Many patients worry about this problem before orthodontic treatment, in fact, there is absolutely no need to be so worried on this issue, the answer is no. The loosening and loss of teeth in old age is mainly due to the resorption of the alveolar bone caused by periodontitis. Orthodontic treatment is a rational biological remodeling process in which light orthodontic forces induce bone resorption on one side of the tooth and new bone reconstruction on the other side, eventually moving the tooth to the desired position. The whole process is gentle and gradual and the teeth are relatively stable. It is normal for teeth to loosen during the orthodontic process, and the teeth will gradually stabilize as the orthodontic treatment is completed. On the contrary, orthodontic treatment will not lead to early loss of teeth in old age. On the contrary, because orthodontic treatment improves the original unevenness of teeth, together with the correct brushing method and regular oral examination, it effectively reduces the generation of periodontal health factors such as dental calculus, improves periodontal health, reduces the occurrence of periodontitis in old age, and reduces the occurrence of loose teeth in old age.