膨胀方式和膨胀量对粘固膨胀复合型螺纹桩固位力的影响
Effects of Expansion Fashion and Expansion Quantity on Retention of Cement-expanded Composite Screw Post
作者：陈新民,王年斌,牛林,何涛,杨艳,张贵菊,吴小红,李萍萍
Author：CHEN Xin-min1,WANGNian-bin2,NIULin1,HETao2,YANG Yan1,ZHANG Gui-ju2,WUXiao-hong1,LIPing-ping2
收稿日期：2005-10-25 年卷（期）页码：2005,23(05):385-
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：膨胀方式,膨胀量,粘固膨胀复合型螺纹桩,固位力,
Key words：expansion fashion,expansion quantity,cement-expanded composite screw post,retention,
基金项目：
中文摘要
目的 研究膨胀方式和膨胀量对粘固膨胀复合型螺纹桩固位力的影响。方法 制作90个有机玻璃模拟
牙根,用不同规格的金属分瓣器制作三叶塑胶膨胀套,以两种不同膨胀方式将相同直径螺纹桩和不同尺寸膨胀套
同时以磷酸锌粘固剂旋转拧入膨胀粘固。在INSTRON4302型万能测试机上进行拉伸测试,加载速度10 mm/min,至
桩核松动、脱位或大位移,记录最大载荷即为桩的固位力。另测试出有机玻璃的水平面和轴面粘接力,来计算桩核
的粘接力,继而得到摩擦力及约束力。结果 不同膨胀方式间固位力大小有统计学差异(P
英文摘要
Objective To study the effects of expansion fashion and expansion quantity on retention of cement-expanded com- positionscrew post(CECSP).Methods Ninety simulated tooth roots made of polymethylmethacrylate were divided into ten groups, each fashion induded five groups. The expanded plastic sheath of tricuspid valvewasmadewiththe special separated valve device and cemented and tightened up into root with the screw post at the same time by ZPC. Then the root and screw post-core system was tested by the speed of 10 mm/min on the INSTRON 4302 and the retention force was recorded.Results It appeared that the difference between different expansion fashion and different expansion quantity were significantly(P
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