Loose incisors are usually determined by the extent of the condition. Traumatic injuries to the teeth can easily cause periodontal damage, congestion and edema, affecting the periodontal membrane and pulp, resulting in symptoms such as self-conscious elongation of the teeth, biting pain, and knocking pain. If the root of the tooth is intact, if the loosening is mild, it can be gradually recovered in 2-4 weeks. If the symptoms are more serious, the patient needs to be treated with splinting and appropriate grinding of the opposite jaw teeth to minimize contact with the affected teeth, which usually takes about 1-3 months for gradual recovery. However, if pulp necrosis is found after examination, further root canal treatment is required and the recovery time will be extended accordingly. If the root of the tooth is fractured and loosened, it will depend on the situation to decide whether to extract the affected tooth or not. When the tooth is knocked loose, you should consult a doctor in time to do the appropriate examination, and at the same time, let the affected tooth rest, reduce the number of biting, avoid eating spicy and stimulating food, pay more attention to oral hygiene, keep the oral environment clean, and regular checkups.