Many patients are concerned about this issue after consultation, especially some patients who have had their teeth extracted. At present, there are no relevant studies at home and abroad to prove the relationship between tooth extraction and tooth loosening. But whether the teeth will loosen after age depends mainly on the periodontal situation (periodontal tissue mainly includes periodontal membrane, alveolar bone and gums), periodontitis is the first cause of tooth loss in the elderly, a neat tooth is conducive to periodontal tissue health, teeth alignment is more prone to periodontitis, gingivitis and other periodontal tissue diseases, from this point of view, orthodontics will not lead to loose teeth fall off Instead, it will benefit periodontal health and make the teeth more stable.