The standard treatment for malignant neoplasia of the cervicofacial area is surgery in association with radio- and/or chemotherapy. These therapies can cause local and systemic complications. Mucositis is the most common dosecorrelated complication to the oral cavity. It is particularly difficult to treat in patients who are already physically and psychologically exhausted by the tumoral pathology. This study illustrates, through a review of the literature, the attack rate, the pathogenesis and the clinical course of the mucositis, as well as the correct dental approach and clinical- therapeutic management of these patients, with the aim of improving the quality of their lives.