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

根据新骨质量标准选择最佳种植体形态

• 批准号: 11557150
• 负责人: AKAGAWA Yasumasa
• 金额: $ 7.94万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11557150/
• 关键词: Dental implant; Bone quality; intra-oral radiography; QCT; μCT; Three-dimensional finite element analysis; pQCT; 骨接触率; 骨体積率

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.

在种植体中获得骨锚定最有效的适当凹槽深度仍然未知。目的是评价圆柱形种植体上附着槽深度对骨支抗的影响。将具有不同凹槽深度的实验圆柱形植入物放置在日本猴子中。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体槽深或种植区骨密度之间的相关性。骨接触的方面根据种植体的凹槽深度而不同。在松质骨区域，0.35 mm凹槽导致骨接触率降低，0.45 mm凹槽导致骨接触率和骨面积均降低。结果表明，根据种植体部位的骨密度，凹槽中的骨迁移方面不同。可以得出结论，在骨密度低的松质骨丰富（IV型）种植体部位，凹槽深度大于0.45 mm将对获得骨锚定产生副作用。