A half knocked out incisor requires a filling or braces depending on whether the nerve has been damaged. If there is no damage to the nerve, a filling can be placed, and if the nerve is injured, braces will be needed. A filling is a method of repairing a defective tooth with an artificial substance, and braces treatment involves making a denture, which is fixed to other tissue structures in the mouth after fabrication, in order to restore the integrity of the teeth. When an incisor is knocked out in half, if there is no damage to the nerve of the tooth, you can choose to have it treated with a filling. However, if the nerve has been damaged, the patient usually suffers from toothache, bleeding and other abnormal symptoms, and then the original tooth needs to be extracted and treated with braces. It is recommended that once a patient has lost half of his or her front teeth, he or she should consult a doctor in a timely manner to complete the relevant examinations before choosing the treatment method.