Dental plastic surgery is now an oral cosmetic project that many people will consider, after all, a mouthful of white and neat teeth is the dream of many people, but although it is normal to make the necessary movement of the teeth in the process of dental plastic surgery, many beauty lovers are concerned about this, they feel that after dental plastic surgery may have the after-effects of loose teeth. The elasticity and toughness of the periodontal membrane allows the teeth to have a certain amount of looseness when traveling to function in order to avoid injury, a phenomenon known as the physiological mobility of the teeth. When the alveolar bone around the root of the tooth gradually resorbs for some reason (such as long-term periodontal disease), the tooth will begin to loosen, and this tooth loosening is pathological. During the process of tooth reshaping, the periodontium, alveolar bone and other structures will also undergo corresponding alterations. Some patients may experience mild tooth loosening, soreness, swelling and chewing weakness, which are all normal reactions to the process of cosmetic dentistry. In fact, after tooth reshaping, teeth are aligned neatly, which is good for oral cleaning and can assist in the treatment of periodontal disease. In this sense, cosmetic dentistry can prevent teeth from loosening as people grow older.