It is recommended that wisdom teeth that have not erupted be extracted before radiotherapy to prevent the emergence of wisdom teeth from leading to pericoronitis and toothache. 1. Generally speaking, within three to five years after radiotherapy surgery, due to the excessive radiation dose of radiotherapy surgery, the teeth of the whole mouth are susceptible to violent caries, resulting in tooth pain. Therefore, before radiotherapy, it is recommended that the decayed teeth in the mouth should be filled in time and root canal treatment should be carried out, and some residual roots that have no value are recommended to be extracted as soon as possible. 2. In addition, due to the special position of wisdom teeth, cleaning difficulty, the probability of caries is higher after radiotherapy surgery, and some wisdom teeth also exist tilted obstruction of the state, there may be the second molar caused by compression leading to caries and other problems, so it is recommended that the best to the hospital stomatology department to take a film examination before radiotherapy surgery, and if the wisdom teeth have not erupted, you can consider cutting the gums and then extract the wisdom teeth.