Piattelli A, Emanuelli M, Scarano A, Trisi P
University of Chieti Dental School, Italy.
Int J Periodontics Restorative Dent. 1996 Apr;16(2):138-47.
The authors report on the microscopic findings in two plasma-sprayed nonsubmerged implants retrieved from a patient 6 months after placement. One of the implants had been loaded for 3 months, while the other was left unloaded. Clinically, the peri-implant gingival tissues were in good health. The implants were sectioned according to the cutting-grinding system. Bone lined the titanium surface almost completely with 77.3% +/- 5.1% of contact in the unloaded implant and 86.5% +/- 3.3% of contact in the loaded implant. Signs of bone resorption with many macrophages and osteoclasts were present in the loaded implant, while in the unloaded implant only osteoclast resorption activity was demonstrable.
作者报告了两枚等离子喷涂非潜入式种植体的微观检查结果，这两枚种植体是在植入6个月后从一名患者体内取出的。其中一枚种植体已负重3个月，另一枚未负重。临床上，种植体周围牙龈组织健康。按照切割研磨系统对种植体进行切片。在未负重的种植体中，钛表面几乎完全被骨组织覆盖，接触率为77.3%±5.1%；在负重的种植体中，接触率为86.5%±3.3%。负重的种植体出现骨吸收迹象，伴有许多巨噬细胞和破骨细胞，而在未负重的种植体中仅可证明有破骨细胞的吸收活性。
