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目的:为探索三焦点牵张成骨的成骨方式及新骨改建过程提供实验依据。方法:取6只山羊下颌骨牵张成骨形成的新生骨组织及其邻近原骨组织,硬组织磨片,扫描电镜观察骨组织断面的超微结构,同时用硬组织磨片四环素荧光双标记技术分析。结果:牵张间隙超微结构观察显示大量新生骨小梁,骨质密度好,中央区新生类骨质沿牵张方向排列,新骨与原骨边界呈骨性融合,在牵张区内有大量的荧光结合,并与周围原有组织有明显的界限。结论:山羊下颌骨三焦点牵张成骨形成的新生骨段可逐渐改建为具有正常结构的骨组织。
Objective: To provide an experimental basis for exploring the osteogenesis mode of triple-focus distraction osteogenesis and reconstruction of new bone. METHODS: Six newborn bone tissues of skeletal bone formed by mandibular distraction osteogenesis in six goats and their adjacent primitive bone and hard tissue sections were observed. The ultrastructure of the bone sections was observed by scanning electron microscopy. At the same time, technical analysis. Results: The ultrastructure of distraction gap showed a large number of new trabecular bone. The bone density was good. The nascent bone in the central area was arranged along the direction of distraction. The borderline between the new bone and the original bone was bony fusion. A large number of fluorescent binding, and there is a clear boundary with the original organization. CONCLUSION: The new bone segment of goat mandibular distraction osteogenesis can gradually be reconstructed into bone with normal structure.