Toothache causing pain on one side of the temple, which is a manifestation of acute pulpitis, when caries develops to a certain extent, there will be bacterial invasion into the pulp cavity, causing congestion in the pulp cavity. If the pulp is not opened and drained in time at this time, excessive pressure will lead to severe pain and even a radiating headache. Especially at night, the pain will gradually increase, requiring the patient to go to the dentist for root canal treatment in a timely manner. The first step of root canal treatment is to open the pulp and drain the blood-filled material in the root canal, after which the pain will be relieved instantly, and then the nerve will be taken out completely, and the standard root canal preparation will be carried out, after which the regular hot glue filling can be carried out. After filling, the tooth itself is relatively fragile and prone to fracture, it is recommended to carry out crown restoration in a timely manner, which can better protect the tooth, and then you can chew food normally.