摘要
研究下颌骨部分缺损自体游离髂骨移植修复后植骨块的吸收情况。方法 对 2 6例下颌骨部分缺损植骨修复的病人进行回顾性分析。描记术后不同时期的下颌曲面体层片 ,测量并比较植骨块近远中及中点附近骨高度的变化 ;比较保留与摘除髁突后 ,以植骨块重建升支的高度变化。结果 髂骨植入 3个月内已发生吸收改建 ,术后 6个月内吸收较快 ,植骨 1年以后骨块高度基本稳定 ;骨块远中端吸收程度重于近中端 ;对于下颌骨缺损包括升支的病例 ,摘除髁突者比保留髁突者的升支高度明显降低。结论 下颌骨缺损自体游离髂骨移植术后骨块的吸收重建 ,术后 6个月为活跃期 ,6～ 12个月后吸收与重建趋向平稳 ;下颌骨缺损涉及升支区域时 ,应尽量保留髁突再行植骨 ,以避免升支高度的严重降低。
Objective To investigate the resorption of the bone grafts in the patients who experienced mandibular reconstruction with free autogenous iliac bone.Methods In this article,26 out of 84 patients were followed up.The heights of the bone grafts on the panoramic radiographs were measured for study.Results The bone grafts were gradually absorbed after operation.The grafts were most quickly resorpted during the first 6 months,and then become slowly resorpted until one year after operation.The distal area of the graft was resorpted much more than the proximal area.In some of the cases,the grafts for reconstruction of ramus and condyle could reduce in height up to 50%.While in the patients whose condyles were reserved during mandibulectomy,the reconstructed ramuses heights reduced only 8.2%.Conclusion It is very beneficial for reconstruction of the mandible to preserve the condyle if possible.
出处
《现代口腔医学杂志》
CAS
CSCD
2000年第3期182-184,共3页
Journal of Modern Stomatology
