放射性龋是一种较常见的口腔颌面部癌瘤放射治疗的远期并发症,常于放射治疗结束后半年发生,但全口牙放射性龋相对少见,而在放疗期即开始发生龋坏者更属罕见,今将我们收治的1例报告如下。 患者,男,48岁。因下颌左右磨牙区和左上颌磨牙区牙龈肿痛2个月,在外院行抗炎治疗无效,后经病理学检查确诊为牙龈淋巴肉瘤,即来我院行放射治疗,DT总量9000cGY。放射治疗结束50天时,因左下磨牙区阵发性剧痛3天,首次来我科就诊。检查:(?)缺失,均见不同程度的龋坏,牙冠呈灰黑色,(?)已成黑色残根,前牙多为邻面龋坏,后牙多 Radioactive caries is a more common long-term complication of radiation therapy of oral and maxillofacial cancer, often occurs six months after the end of radiotherapy. However, the full oral radioactive caries is relatively rare, and caries begin to occur during radiotherapy More rare, now we treat one case reported as follows. Patient, male, 48 years old. Because of the mandibular left and right molar area and the left maxillary molars area swollen gums pain for 2 months, outside the hospital anti-inflammatory treatment is invalid, after pathological examination diagnosed as gum lymphosarcoma, that come to our hospital radiotherapy, DT total 9000cGY. 50 days after the end of radiotherapy, paroxysmal pain in the left lower molars area for 3 days, the first visit to our department. Check: (?) Deletion, were seen varying degrees of caries, crowns gray-black, (?) Has become a black residual root, the anterior tooth mostly adjacent carious, multi-posterior teeth