Broken half of a large tooth is always painful and dental nerve exposed, dental nerve damage and other factors related to the drug pain, symptomatic treatment, repair of large tooth defects. 1. Drugs to stop pain: broken half of the tooth is always pain, may be the tooth trauma caused by dental nerve pulp exposed, by cold air or food stimulation triggered pain. If the pain is more severe, you can follow the doctor’s instructions to take oral ibuprofen and other painkillers to relieve, and then go to the hospital for root canal treatment, and then crown repair. 2. Symptomatic treatment: half of the tooth is broken and always in pain, you need to carry out an oral examination to clarify the cause of half of the tooth is broken, to determine whether it is caries, pulpitis or other oral diseases. If the pulp nerve exposure is strong, you can directly remove the pulp under local anesthesia to complete a one-time root canal treatment. 3. Repair of large tooth defects: after symptomatic treatment of tooth pain relief, the need for large tooth repair, you can make porcelain or all-ceramic crown repair. Broken half of a large tooth is always in severe pain, it is recommended to first go to the regular hospital stomatology department.