肿瘤、骨髓炎、放射性骨坏死和大面积外伤均可造成下颌骨缺损,为了恢复颜面的形态和功能,就需要重建下颌骨。重建的方法很多,最常用的是新鲜自体骨移植。随着化疗的进步,恶性肿瘤疗效的不断提高,加上外伤所致的下颌骨缺损等症,今后需要骨移植的病例有增加的趋向。常规骨移植的存活依靠周围组织的早期血管化,因此受区软组织创床必须柔软、无感染并含有健康的血管系统。由于放射、炎症或手术等在局部形成瘢痕,可直接影响血运。在这种血运欠佳的创床上进行骨移植是 Tumors, osteomyelitis, radiosteel necrosis and extensive trauma can cause mandibular defects. To restore facial morphology and function, mandibular reconstruction is required. There are many ways to rebuild, the most commonly used is fresh autologous bone graft. With the progress of chemotherapy, the continuous improvement of the efficacy of malignant tumors, coupled with mandibular defect caused by trauma embolism, the future need for bone transplantation cases have an increasing trend. Conventional bone graft survival depends on the early vascularization of the surrounding tissue, so the area of ​​soft tissue created by the bed must be soft, non-infected and contain a healthy vascular system. Due to radiation, inflammation or surgery in the local formation of scars, can directly affect blood circulation. Bone transplants in this bed of blood are not good