There is no such thing as what toothpaste is better for radiation therapy. Radiation therapy for tumors is a local treatment method that uses radiation to treat tumors. High doses of radiation are generated by special equipment, which reaches the tumor cells and stops the cells from dividing and growing by breaking the DNA strands inside the tumor cells. During radiotherapy, maintaining good brushing habits can keep the mouth clean and reduce the occurrence of dental caries and bleeding gums. However, toothpaste does not have the efficacy of treating cancer, and generally has no effect on radiotherapy. Ordinary toothpaste is fine during radiotherapy. During radiotherapy or brushing teeth during the patient’s physical discomfort should be actively consult the doctor, patients should not blindly use drugs to avoid adverse results.