Radiotherapy (RT) is the standard and widely used procedure for treating patients with head and neck cancer with successful results. In spite of the advancement of radiation techniques, this procedure is frequently associated with a wide range of oral complications, such as radiation caries, loss of taste, xerostomia, erythema, mucositis, trismus, and osteoradionecrosis, with significant impairment of the patient's quality of life. Hypersensitivity of the teeth, taste loss, oral bacterial shift, and periodontal breakdown are other problems of concern while treating patients undergoing...