Periodontitis is mainly due to bacterial infection causing inflammation of periodontal tissues, the early manifestations are bleeding gums and pain, and in the middle and late stages there will be obvious root exposure and tooth loosening. For loose teeth, the following treatment measures are mainly taken: 1, first of all, basic treatment of periodontitis, including ultrasonic supragingival scaling, subgingival scraping, root surface leveling, after basic treatment most of the loose teeth will be significantly improved; 2, periodontal basic treatment after the loose teeth are not significantly improved, this time to further examination, if there are deep periodontal pockets around the loose teeth, which requires Periodontal surgery, the most important surgical method is called flap surgery, that is, through the surgical incision will have inflammation of the periodontal pockets open, the root surface of the teeth to get rid of the granulation tissue, and the inflammation of the periodontal pockets removed, followed by 1-2 months of observation, then the looseness of the teeth will be significantly improved. If the looseness of the tooth is still severe, reaching degree III, the affected tooth will need to be extracted. If the tooth looseness does not reach degree III, but is within degree I to II, periodontal splinting may be considered.