Clinical Research Directory

Inclusion Criteria: * Patients diagnosed with malignant tumors of the head and neck without metastasis * Age ≥18, ≤80 years old * ECOG\_PS score ≤2 * Receiving radiotherapy alone or concurrent radiotherapy with a radiation dose of \>50 Gy * Signed informed consent form Exclusion Criteria: * Patients with oral mucositis due to allergic reactions to certain foods, medications, or oral care products * Have a history of head and neck radiotherapy * Poor oral hygiene or severe periodontitis * Poor compliance * Other patients who, in the opinion of the investigator, are not suitable for participation in this study