Gray J B, Steen M E, King G J, Clark A E
Am J Orthod. 1983 Apr;83(4):311-7. doi: 10.1016/0002-9416(83)90226-9.
The abilities of two types of small cylindrical endosseous implant to resist movement when loaded with constant forces of orthodontic magnitudes were tested. Pairs of Bioglass-coated implants and pairs of Vitallium implants of the same size were implanted into the femurs of twelve rabbits. After a 28-day healing period, these implants were loaded with forces of 60 grams, 120 grams, and 180 grams. Analysis of implant movement after 28 days revealed that no statistically significant movement occurred at any of the three force levels for either type of implant. Histologic evaluation revealed a connective tissue encapsulation with the Vitallium implant and an implant-bone bond with the Bioglass implant. No histologic evidence of implant movement was observed for either implant type at any force level.
测试了两种小型圆柱形骨内种植体在承受正畸大小的恒定力加载时抵抗移动的能力。将相同尺寸的成对生物玻璃涂层种植体和成对的维他灵种植体植入12只兔子的股骨中。经过28天的愈合期后，这些种植体分别承受60克、120克和180克的力。对28天后种植体移动情况的分析表明，两种类型的种植体在任何一个力水平下均未发生具有统计学意义的移动。组织学评估显示，维他灵种植体周围有结缔组织包裹，而生物玻璃种植体与骨形成了种植体-骨结合。在任何力水平下，两种种植体类型均未观察到种植体移动的组织学证据。
