Prevention of orofacial tumors: primary: hygiene, dental treatment, diet, smoking, alcoholism secondary: premalignancy, early diagnostics, treatment tertial: dispensarisation Diagnosis: premalignancy, tumors ? TNM clasification => staging Treatment: operation ? actinotherapy (radiotherapy-brachytherapy, teletherapy) ? chemotherapy (regional, systemic) ? concomitance chemo-radiotherapy.Operation ? procedure radicality ? histological typisation ? grading Postoperative treatment, rehabilitation, reconstructive operations.