Yamada S, Sekiya S, Yamanouchi K, Kitamura H, Ohshima M, Sato T
Bull Tokyo Dent Coll. 1989 Nov;30(4):187-93.
A description of the supporting tissues of single-crystal sapphire implants which had functioned for twelve months is reported. The tissue was recovered at autopsy. The peri-implant membrane was formed by the action of mastication forces on the implants and consisted of three non-mineralized connective tissue layers. Layer I was composed of collagen fibers. These fibers were oriented parallel to the implant surface. Layer II lacked collagen fibers. This layer was composed of connective tissue materials. Layer III was covered by osteoclasts or osteoblasts. This layer was composed of collagen fibers which radiated to the bone surface. The collagen fiber bundles did not run from the implant fibers to the bone fibers. This peri-implant membrane formed only a hammock-like supporting mechanism. These findings suggest that the implant had been encapsulated by the peri-implant membrane, which failed to distribute masticulation stress to the peripheral tissues. One year after implantation of single-crystal implants, the tissue-implants interface was observed. Non-mineralized connective tissue layers (a "peri-implant membrane") existed at all implant interfaces. The origin of this structure and the role of a peri-implant membrane are discussed.
本文报道了已使用十二个月的单晶蓝宝石植入物的支持组织情况。这些组织是在尸检时回收的。种植体周围膜是由咀嚼力作用于植入物而形成的，由三层非矿化结缔组织层组成。第一层由胶原纤维组成。这些纤维与植入物表面平行排列。第二层没有胶原纤维。这一层由结缔组织材料组成。第三层覆盖有破骨细胞或成骨细胞。这一层由向骨表面辐射的胶原纤维组成。胶原纤维束并非从植入物纤维延伸至骨纤维。这种种植体周围膜仅形成一种吊床状的支持机制。这些发现表明，植入物已被种植体周围膜包裹，而该膜未能将咀嚼应力分散至周围组织。单晶植入物植入一年后，观察到组织 - 植入物界面。在所有植入物界面均存在非矿化结缔组织层（“种植体周围膜”）。本文讨论了这种结构的起源以及种植体周围膜的作用。
