口腔的放射治疗,由于影响到骨质的血运分布而使血管内壁增厚,从组织学观察,可见小血管透明性变、动脉内膜炎和栓塞形成,最终发生纤维化。上述改变为进行性,终致使骨丧失活力。当血运供给不足时,坏死即可发生。老年患者,一般血运供给不足,便会加重骨坏死的发生。治疗上有根治及保 Oral radiation therapy, due to the distribution of blood flow affecting the bone thickening of the blood vessel wall, from the histological observation, we can see the small blood vessels become transparent, endarteritis and embolization formation, the final occurrence of fibrosis. The above change is progressive, eventually resulting in loss of vitality. Necrosis can occur when blood supply is insufficient. Elderly patients, the general lack of blood supply, it will increase the incidence of osteonecrosis. Treatment has a cure and insurance