Li J, Liao H, Fartash B, Hermansson L, Johnsson T
Centre for Oral Biology at Novum, Karolinska Institute, Huddinge, Sweden.
Biomaterials. 1997 May;18(9):691-6. doi: 10.1016/s0142-9612(96)00185-8.
The purpose of this investigation was to examine the effect of the surface macrostructure of a dimpled commercially pure titanium (cp Ti) implant on bone ingrowth in vivo by means of histological examination and a push-out test. Cylindrical implants were inserted in one femur of each experimental rabbit and the animals were killed at 1.5, 3 and 13 months after implantation. The femur with the implant of each animal was then examined in a push-out test. The fracture surfaces of the bone-implant interface after the push-out test were examined under light and electron microscopy. It seems that the dimpled cp Ti surface results in the increased retention of the cp Ti implant in bone due to interlocking between vital bone and the dimples.
本研究的目的是通过组织学检查和推出试验，研究一种带凹坑的商业纯钛（cp Ti）种植体的表面宏观结构对体内骨长入的影响。将圆柱形种植体植入每只实验兔的一侧股骨，在植入后1.5、3和13个月处死动物。然后对每只动物带有种植体的股骨进行推出试验。在光学显微镜和电子显微镜下检查推出试验后骨-种植体界面的断裂表面。似乎带凹坑的cp Ti表面由于活性骨与凹坑之间的互锁作用，导致cp Ti种植体在骨中的固位增加。
