The separation of the tooth and the flesh may be due to the presence of calculus around the gums, which tends to cause the alveolar bone to recede, which also tends to form a gap between the gums and the alveolar bone. In this case, it is recommended to remove the calculus under the gums and the plaque on the gums to maintain the oral hygiene thoroughly, and slowly the gums will attach to the alveolar bone, and in time there will no longer be a gap between the teeth and the flesh of the teeth. However, it is recommended to have regular checkups and regular scaling to maintain oral hygiene for a long time, and to brush your teeth every morning and evening, using the correct brushing method, adults are recommended to use the bus brushing method, children are recommended to use the circular method, and it is usually recommended to use mouthwash, the common mouthwash is compound chlorhexidine rinse, but it should not be used for a long time to avoid producing drug-resistant strains.