Impact of Tomotherapy on Xerostomia and Quality of Life of Patients With Cancer of the Upper Aero-digestive Tract

Inclusion Criteria: * Patient (e) old (e) over 18 years * Patients with squamous cell carcinoma of head and neck (oral cavity, oropharynx, lymphadenopathy without gateway) histologically proven. * Patient targeted for head and neck radiotherapy by Tomotherapy exclusive with or without concurrent chemotherapy (containing platinum) * Indication of head and neck radiotherapy bilateral * All of the TNM stage except metastatic * Patient has signed informed consent for participation in the study * Mastery of the French language Exclusion Criteria: * History of head and neck radiotherapy * Indication of head and neck radiotherapy unilateral * Personal history of malignant tumors uncontrolled over the past 5 years * History of oral sicca syndrome * Surgical removal of one or more salivary glands (parotid, submandibular gland, sublingual gland) * Concomitant treatment with amifostine * Concomitant treatment with cetuximab * Primary tumor of the salivary glands * Head and neck hyperfractionated radiotherapy and / or accelerated * Head and neck radiotherapy hypofractionated * Metastatic disease * Patient deprived of liberty, under guardianship * Any medical condition or psychological associate that could compromise the patient's ability to participate in the study * Refusal of the patient.