Standard selection of the optimal implant form based on new bone quality

在种植体中获得骨锚定最有效的合适凹槽深度仍然是未知的。目的是评价圆柱型种植体附着槽深度对骨锚定的影响。在日本猴子体内放置不同凹槽深度的实验性圆柱体植入物。对种植体周围新生骨进行组织学和组织形态计量学分析，并评估新生骨与种植槽深度或种植区域骨密度的相关性。骨接触方面根据种植体的凹槽深度不同而不同。在松质骨区，0.35 mm的沟槽导致骨接触率下降，0.45 mm的沟槽导致骨接触率和骨面积均下降。结果显示，骨槽内的骨迁移方面根据种植体部位的骨密度而不同。由此可见，在骨质密度较低的松质丰富（IV型）种植体部位，凹槽深度大于0.45 mm对获得骨支抗有副作用。

An appropriate groove depth that was most effective in obtaining bone anchorage in implants is still unknown. The purpose is to evaluate the influence of the depth of grooves attached to the cylindrical type of implants on bone anchorage. Experimental cylinder implants with different groove depths were placed in Japanese monkeys. The newly generated bone around the implants was analyzed histologically and histo-morphometrically, and was evaluated the correlation between the newly generated bone and the groove depth, or the bone density in the placement area. The aspects of bone contact differed according to the groove depth of the implants. In cancellous bone area, the 0.35 mm grooves caused a decrease in the rate of bone contact and the 0.45 mm grooves caused a decrease in both the rates of bone contact and bone area. The results revealed that the aspects of bone migration in the grooves differed according to the bone density of the implant site. It could be concluded that in the cancellous rich (type IV) implant site with low bone density, the groove depth more than 0.45 mm would be side effective in obtaining bone anchorage.