There are two misconceptions about loose teeth among patients, one is that all loose teeth should be extracted, and the other is that loose teeth should be left to fall out on their own rather than be extracted. In fact, both of these views are biased. Loose teeth caused by periodontitis can be fixed as long as they meet the indications, and with the continuous advancement of materials and technology, more and more loose teeth can be retained and continue to perform their functions. Generally, teeth with more than 3 degrees of loosening or nerve necrosis are extracted as a last resort. For teeth caused by periodontal disease, if they are mildly loose, they will be restored to normal through effective periodontal disease treatment; if they are moderately loose, while treating periodontal disease, the loose teeth should be fixed together with the adjacent teeth by ligature to reduce the load of the loose teeth and prevent the aggravation of the loose teeth, and most of the loose teeth cannot be restored at this time; if they are severely loose, i.e. 3rd degree loose teeth, the affected teeth should be extracted at this time. To avoid unnecessary burden on the adjacent teeth. Loose teeth caused by trauma, if mildly loose, can take anti-inflammatory drugs, but once the inflammation subsides, the teeth can automatically restore the state of stability; if loose serious or dislocation, displacement, the tooth should be reset, and then ligature fixed on the adjacent teeth, and take anti-inflammatory drugs, maintain oral hygiene, disable the tooth for a short period of time, etc., after 1-2 months the tooth can be restored to normal. Tooth loosening during acute attack of periodontitis or periapical periodontitis, treatment is mainly to control the inflammation, once the acute inflammation is relieved, tooth loosening can also be reduced or disappeared. The teeth loosening when the bite force of individual teeth is too large or the bite relationship is abnormal, generally after the doctor adjusts the bite, eliminates the bite trauma, the alveolar bone can repair itself, and the teeth can restore the stable state. According to statistics, there are very few people in China who still maintain more than 20 teeth at the age of 40. Therefore, it is recommended that we should pay attention to oral maintenance, insist on brushing after three meals, and clean teeth once a year. For loose teeth, we should not lightly remove them, but identify the cause and treat them properly.