有机硅烷偶联剂对种植义齿固定螺丝孔微渗漏的影响

Closing Effect of Organosilane Coupling Agent on the Fixation Screwpores in Implant Denture

目的:观察有机硅烷偶联剂在种植义齿固定螺丝孔封闭中的作用;引入并改造一种定量检测固定螺丝孔微渗漏的方法-葡萄糖氧化酶-过氧化物酶法(GOD-POD)。方法:制备40个钛合金中空半圆柱状试件(上1/2表面烤瓷,内表面喷砂+酸蚀处理),分为偶联剂处理组与对照组,用Vivadent瓷化树脂粘接后进行对比冷热循环试验。采用GOD-POD法测量微渗漏情况并进行对比。结果:偶联剂组与对照组间的微渗漏具有明显差异(P<0.01)。结论:使用有机硅烷偶联剂可以有效减少固定螺丝孔周壁粘接界面的微渗漏;GOD-POD法是一种能精确测定种植义齿固定螺丝孔微渗漏的简单灵敏的方法。

Objectives： The purpose of this study was to observe the effects of organosilane coupling agent on mic- roleakage of the fixation screwpores. Using the glucose oxidase- peroxidase（GOD-POD） method to measure mic- roleakage. Methods： A total of forty hollow semi-cylinders were fabricated with titanic alloy, with the upper half of specimens were porcelain, and the internal surfaces were sandblasted and etched. All specimens were divided into two groups：treated and not treated with organosilane. After bonding with Vivadent resin, the testing samples were assigned into two subgroups for different thermocycles. Then the degree of microleakage was measured by GOD-- POD methods. Results： Statistical analysis revealed that the microleakage associated with organosilane coupling a- gent was significantly different （P〈0.01）. Conclusions.. The results suggest that the microleakage can be reduced if the specimens are treated with organosilane. GOD-POD method can be used to measure the microleakage simply and quantitively.