“…Combined modality treatment including RT and chemotherapy (CT) and/or bio-therapy is a well-established option providing a survival advantage over radiation alone [3,4]. Oral mucositis (OM) is a frequent finding in HNC patients undergoing RT and the concurrent administration of CT, for example with agents having a radiosensitizing action such as cisplatin (CDDP), may enhance the damage to the mucosal layer, impairing the mechanism of sublethal damage repair and, hence, increasing the likelihood to develop this side effect [5,6]. The incidence, intensity and duration of OM depend on the site and subsite involved by the primary tumor and on RT-related (total dose, fractionation, treatment volumes) and patient-related (poor oral hygiene, alcohol and tobacco use, xerostomia, comorbid conditions) factors [6,7].…”