If a small piece of incisor is knocked out, it usually belongs to incisor defect, which can be repaired by going to a hospital stomatology department or regular oral medical clinic and taking dental restoration under the guidance of medical professionals, choosing to use inlays, crowns, veneers and other restorations. Usually the effect is better, but the specific maintenance time varies from person to person and is related to the restoration material, restoration technology, daily care and other factors. If the incisor defect is small and the pulp and nerve are not exposed, inlay restoration or veneer restoration can be chosen. In case of large incisor defects, partial crowns and full crowns can be chosen according to the extent of the defect. If the defect also exposes the pulp and nerve, treatment of the pulp and nerve is usually required before restoration. In addition, patients should communicate with their doctors before the restorative dentistry procedure to fully understand the process and the risks involved, and to be prepared psychologically. Patients should avoid menstruation, breastfeeding, pregnancy, etc. They should pay attention to oral hygiene before and after surgery and rinse their mouth after eating. In addition, if abnormal symptoms occur after surgery, you should seek medical treatment promptly.