Generally, when teeth have symptoms such as floating sensation, elongation, high bite, etc., they are mostly caused by underlying inflammation in the gums or the roots of the teeth. If the inflammation of the gums leads to loose teeth, it is extremely necessary to go to the hospital as soon as possible to get timely treatment, otherwise the aggravation will cause periodontitis and may cause premature loss of the affected teeth, or even the loss of all teeth. Tooth loosening is a chronic disease with a long diagnosis and treatment, because the causes are complex and the treatment methods are multifaceted. Local treatment is mainly to remove irritants, control inflammatory infections, learn proper brushing methods and maintain good oral hygiene. In the acute stage, when periapical inflammation causes discomfort and woodiness in the teeth, and when the affected tooth is felt to be in contact with the opposite tooth first when biting, and the upper and lower teeth cannot bite together, prompt medical attention is needed to eliminate the infection in the apical region. If the periapical inflammation spreads it can cause periapical abscess or interstitial infection, which may also cause systemic symptoms such as fever in severe cases.