Teeth will be loose for the following reasons, 1, caused by periodontal disease, when there is periodontal disease between the gums and teeth have a large amount of calculus, so with the teeth are not fit, and alveolar bone has retraction, it is easy to produce the phenomenon of loose teeth. Usually recommended timely treatment of periodontal disease, and if necessary, for loose teeth fixed surgery. 2, loose teeth may be due to tooth root tip inflammation, then it is easy to cause the root tip of the abscess will lead to the tooth will have a sense of floating loose phenomenon, usually recommended to do root canal treatment. 3, teeth will be loose, may be due to the teeth in the teeth inadvertent chewing led to tooth splitting, so the teeth will have a sense of loosening. And this loosening is generally based on the location of the fractured tooth to decide whether the tooth is extracted or not. Usually if it is the apical 1/3 fracture generally do tooth fixation, and then wait for its own healing, if it is the middle of the heel fracture is recommended to extract the tooth.