头颈部肿瘤患者放射治疗后的两个主要并发症是颌骨的放射性骨坏死和牙齿的猖獗性放射性龋,这两个并发症对于患者都是非常痛苦的。作者根据304例口腔和咽部癌进行放射治疗的病人,分析研究这些并发症的发生及其预防治疗的问题。304例口腔情况大致分成下列四种:①无牙(牙合);②牙列情况很差;③牙列及卫生情况一般;④牙列及卫生情况很好。牙列情况很差的病人在放疗前 Two major complications of radiation therapy in patients with head and neck cancer are osteonecrosis of the jaw and aggressive radioactive dental caries, both of which are very painful to patients. Based on 304 patients with oral and pharyngeal cancer radiotherapy patients, analysis of the occurrence of these complications and the prevention and treatment of the problem. 304 cases of oral cavity can be roughly divided into the following four categories: ① no teeth (occlusal); ② dentition is poor; ③ dentition and health conditions in general; ④ dentition and health situation is very good. Patients with poor dentition before radiotherapy