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

在种植体中获得骨锚固最有效的适当凹槽深度仍是未知的。目的是评价圆柱形种植体附着槽的深度对骨支抗的影响。将不同凹槽深度的圆柱形种植体植入日本猕猴体内。对种植体周围新生骨进行组织学和组织形态计量学分析，并评价新生骨与种植区骨槽深度或骨密度的相关性。不同种植体的凹槽深度不同，骨接触的程度也不同。在松质骨区，0.35 mm槽使骨接触率降低，0.45 mm槽使骨接触率和骨面积降低。结果显示，不同种植部位的骨密度不同，骨槽内的骨迁移情况也不同。结论：在骨质密度较低的富松质(IV型)种植体处，槽深大于0.45 mm可能是获得骨锚固的副作用。

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.