放射線照射下顎骨の即時再移植に関する研究 : 第 1 編 臨床応用に関する研究
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It was performed that the clinical study on the immediate retransplantation of mandibular pieces after 5000R single irradiation, of which visible lesions were removed from resected mandible. The objective cases consist of cancer group (4 cancers) and non-cancer group (a mixed epidermoid and follicular cyst, mycosis, osteoma, and ameloblastoma). There were particular differences between cancer group and non-cancer group as a result of clinical and roentgenological research from 6 months to 34 months after operation. The results obtained were as follows : 1. Cancer group ; 5 months postoperative x-ray films showed that pseudoarticulation formed at the conjunctive portions of retransplanted mandible and host. However, the retransplanted ascending ramus in good conditions functioned it's role. At this time, new bone formation surrounding grafts or enlargenent of transplanted bone itself which observed in the cases of fresh autogenous graft could not be seen. This tendency in the cancer group was considered that the influences due to pre- and post operative x-ray irradiation for surrounding soft tissues were more affected than 5000R single irradiation for retransplanted mandibular pieces. 2. Non-cancer group ; The callous production began at the contact portion of remained mandible and retransplanted mandibular pieces during 2 or 3 weeks after operation. Further, the resorption and smoothing of sharp edges of transplanted mandible were observed. The functional reconstruction of retransplanted mandible continued day after day and it served mandibular arch recovery. Moreover, the additional new bone formation was observed at the alveolaredges or the porton of process coronoideus and it connected partly to the retransplanted mandible. However, the enlargement of transplanted bone observed in fresh autogenous bone grafts could not be seen in present grafts and the speed of functional reconstruction was later in comparison with fresh autogenous bone graft. 3. No recurrent tumor from retransplanted mandibular pieces was observed in this period.
- 九州歯科学会の論文
- 1970-07-31
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