Loose teeth require dental fixation or periodontal systemic treatment. The common cause of tooth loosening is apical tooth inflammation, which is caused by the destruction of the alveolar bone in the apical region, and this condition requires root canal treatment. Loose teeth can also be caused by occlusal trauma, overfilling materials, or bad restorations that cause loose teeth, which need to be adjusted. Loose teeth may also be caused by periodontitis, not brushing in time after eating, food debris or soft tartar accumulates around the teeth, forming tartar under the calcification of saliva, intensifying the inflammation of periodontal tissues, leading to the destruction of alveolar bone, causing loose teeth, this situation requires periodontal system treatment, after controlling periodontal inflammation, loose teeth fixed treatment. Loose teeth may also be acute damage to the periodontal membrane caused by dental trauma, if the loosening is not serious you can let the affected tooth rest and not exercise chewing function. If the loosening is severe, periodontal fixation, such as fiber band fixation, is possible. After one month of fixation, the fixation can be removed and the periodontium of the tooth can be regularly observed without chewing food. Therefore, loose teeth need root canal treatment, or adjustment of the tooth, and loose serious teeth should be fixed.