The clarification of the mechanisms of peri-implant bone resorption caused by the mechanical stress and the proposal of proper shape of the implant body

本研究旨在探讨种植体周围骨应力分布对破骨细胞定位的影响。组织学观察发现，破骨细胞不仅在种植体周围骨的周边，而且在种植体体和种植体周围骨之间观察到。埋头孔的存在以及螺距和螺纹角的差异对种植体周围骨的最大应力值有很大影响。种植体周围的应力分布与破骨细胞的定位无明显关系。

This study was performed to clarify the effect of stress distribution around periimplantbone on the localization of osteoclast. Histological observation revealed that osteoclasts were observed not only at the perimeter of the periimplant bone, but also between the implant body and periimplant bone. The presence of countersink and the differences of thread pitch and the thread angle greatly affected the maximum stress value at the periimplant bone. No apparent relationship was indicated between the periimplantstress distribution and osteoclast localization.