| 微螺钉种植体支抗即刻加载的动物实验研究 |
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| 引用本文： | 武红梅,冯云霞,李罡,张春香.微螺钉种植体支抗即刻加载的动物实验研究[J].山西医科大学学报,2008,39(6). |
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| 作者姓名： | 武红梅 冯云霞 李罡 张春香 |
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| 作者单位： | 山西医科大学口腔系,太原,030001 |
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| 摘 要： | 目的 研究微螺钉支抗种植体即刻负载的稳定性. 方法 以两只绵羊作为实验动物,分别于两侧下颌骨各植入4枚微螺钉种植体,共计16枚,随机选择一侧即刻加力200 g为实验组,对侧不加力为对照组,通过测量种植钉-骨界面的剪切力,评价即刻负载对支抗种植钉稳定性的影响. 结果 实验组种植体的剪切力平均137.53 N,对照组种植体的平均161.48N,两组剪切力值无统计学差异(P>0.05).检测中随着载荷的增加种植体颈部出现不同程度的弯曲. 结论 良好的初始稳定性前提下适当力值的即刻加载不会影响种植体的稳定,可以满足正畸要求.
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| 关 键 词： | 支抗 微螺钉种植体 剪切力 微螺钉种植体 支抗 即刻加载 动物实验研究 loaded anchorage implant stability experimental evaluation 正畸 初始稳定性 前提 弯曲 程度 颈部 载荷 检测 统计学差异 力值 剪切力 |
Animal experimental evaluation on the stability of micro-screw implant as orthodontic anchorage loaded immediately |
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| WU Hong-mei,FENG Yun-xia,LI Gang,ZHANG Chun-xiang.Animal experimental evaluation on the stability of micro-screw implant as orthodontic anchorage loaded immediately[J].Journal of Shanxi Medical University,2008,39(6). |
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| Authors: | WU Hong-mei FENG Yun-xia LI Gang ZHANG Chun-xiang |
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| Institution: | Dept of Stomatology;Shanxi Medical University;Taiyuan 030001;China |
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| Abstract: | Objective To study the stability of micro-screw implants loaded immediately as orthodontic anchorage. Methods Two sheep were served as experimental animal.Sixteen micro-screw implants were inserted in bilateral mandible.The implants of one lateral mandible were randomly chosen to be loaded immediately with 200 g-force(experimental group),while the implants of the other lateral were not loaded(control group).The shear strength of the interface between implant and bone was measured to evaluate the stability o... |
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| Keywords: | anchorage micro-screw implant shear strength |
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