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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >A clinical case report: interface analysis of a successful well-functioning transmandibular implant from a cadaver mandible.
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A clinical case report: interface analysis of a successful well-functioning transmandibular implant from a cadaver mandible.

机译：一个临床病例报告：从尸体下颌骨成功完成功能良好的下颌植入物的界面分析。

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摘要

Transmandibular implants (TMI) are indicated both for functional reconstruction of the severely atrophic mandible and when routine augmentation is unpredictable. This study investigates the interface of bone around a TMI, retrieved from the cadaver. The TMI had successfully functioned for 7 years. The mandible was immersed in 10% formaldehyde and sectioned into nine appropriate pieces. Samples were embedded in polymethylmethacrylate, and cut around the transosseous posts and cortical screws in both vertical and horizontal sections. Samples were analyzed at 400 MHz (nominal lateral resolution, 2.5 microm) using a UH3 Scanning Acoustic Microscope (Olympus, Tokyo, Japan). The middle of implant specimens 1-4 were cut to 50 microm, and stained by toluidine blue for light microscopy. Dental X-rays showed no bone resorption around any implant. On a 2-mm lateral scan, almost uniform interface space was seen between bone and implant surface in cortical screws. There are wider spaces around the transmandibular posts in the superior area. Histology revealed the small area of direct contact. There is bone marrow space in the interface, with no significant fibrous tissue. We interpret these results at the interface to be because of adaptation for stress distribution.
机译：颌下植入物（TMI）既可用于严重萎缩性下颌骨的功能重建，又可用于常规的无法预测的情况。这项研究调查了从尸体中获取的TMI周围骨骼的界面。 TMI已成功运行了7年。将下颌骨浸入10％甲醛中，切成9个合适的小块。将样品包埋在聚甲基丙烯酸甲酯中，并在横断面和横断面周围切开骨小节和皮质螺钉。使用UH3扫描声学显微镜（奥林巴斯，东京，日本）以400 MHz（标称横向分辨率，2.5微米）分析样品。将植入物样品1-4的中间切成50微米，并用甲苯胺蓝染色以进行光学显微镜检查。牙科X射线显示任何植入物周围都没有骨吸收。在2毫米的横向扫描中，在皮质螺钉的骨骼和植入物表面之间观察到几乎均匀的界面空间。在上颌区的下颌骨柱周围有较宽的空间。组织学显示直接接触的面积很小。界面处有骨髓间隙，无明显的纤维组织。我们将这些结果解释为是由于适应应力分布。

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