Histomorphometric Analysis and Removal Torque of Small Diameter Implants With Alternative Surface Treatments and Different Designs
Histomorphometric Analysis and Removal Torque of Small Diameter Implants With Alternative Surface Treatments and Different Designs
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DOI：
10.1563/aaid-joi-d-09-00052
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发表时间：
2010-01-01
影响因子：
1.6
通讯作者：
Lee, Suk-Won
中科院分区：
文献类型：
--
作者：
Ahn, Su-Jin;Leesungbok, Richard;Lee, Suk-Won
本研究旨在研究不同设计的小直径种植体的组织形态计量学和生物力学比较。这些种植体可以通过手术放置在狭窄的骨间隙中，例如咬合负荷低的下切牙区域。本研究设计了螺纹钉种植体标本。将这些样本种植体分为6组：第1组，机加工种植体;第2组，可吸收喷砂介质（RBM）处理种植体;第3组，机加工种植体，带长垂直槽;第4组，RBM处理种植体，带长垂直槽;第5组，RBM处理种植体，上螺纹上带垂直槽;第6组，RBM处理种植体，下主干上带垂直槽。通过手术将样本植入物放置在家兔胫骨内侧。手术后2、4和8周处死动物。测量取出扭矩，并制备组织进行组织学和组织形态学分析。测量骨-种植体接触和螺纹内骨面积百分比。RBM处理的种植体与垂直槽组显示出显着更高的值的去除扭矩，骨-种植体接触，骨面积率比加工表面组。
This study was designed to investigate the histomorphometric and biomechanical comparison of small-diameter implants with different designs. These implants can be placed surgically in narrow bone spaces, such as the lower incisor region, that have low occlusal loading. Specimens of screw-shaped pin implants were designed for the study. These specimen implants were divided into 6 groups: group 1, machined implants; group 2, resorbable blast media (RBM)-treated implants; group 3, machined implants with a long vertical groove; group 4, RBM-treated implants with a long vertical groove; group 5, RBM-treated implants with a vertical groove on the upper thread; and group 6, RBM-treated implants with a vertical groove on the lower trunk. The specimen implants were placed surgically on the medial side of the rabbit tibia. Animals were sacrificed 2, 4, and 8 weeks after surgery. The removal torque was measured and tissues were prepared for histologic and histomorphometric analysis. The bone-to-implant contact and the percentage of the bone area inside the threads were measured. RBM-treated implants with vertical groove groups showed significantly higher values of removal torque, bone-implant contact, and bone area rate than the ones of machined surface groups.