A broken half of the incisor is painful to inhale and eat. It can be treated by resin filling, inlay restoration, wearing a crown, tooth extraction and other measures. 1. Resin filling: the broken half of the incisor does not reveal the nerve, only the enamel can be partially filled with resin, after which the tooth should be protected to avoid taking too hard ingredients. 2. Inlay restoration: If the incisor is broken in half, it can be restored with inlay if the defect is serious. 3. Wearing a crown: If the nerve is exposed, root canal treatment can be carried out first, and then a crown can be worn to protect the tooth. 4. Extraction: If the root of the tooth has been broken, the incisor can be extracted, and then a denture or dental implant can be considered. If the incisor is broken in half, it is painful to inhale and eat, you need to go to the hospital in time for examination and treatment under the guidance of the doctor.