表面处理对正畸粘结至汞合金的影响。
Effects of surface treatment on orthodontic bonding to amalgam.
作者信息
Skilton Jonathan W, Tyas Martin J, Woods Michael G
机构信息
School of Dental Science, The University of Melbourne, Melbourne, Victoria, Australia.
出版信息
Aust Orthod J. 2006 May;22(1):59-66.
AIM
This study aimed to compare the shear bond strengths of metal brackets bonded to amalgam surfaces.
METHODS
One hundred and fifty amalgam samples were fabricated and either polished, roughened with a diamond bur or sandblasted with 50 mm aluminium oxide. Following thermocycling the shear bond strengths were tested and compared with control samples bonded to etched enamel.
RESULTS
Concise resin composite, Metal Primer/Concise resin composite and All-Bond II/Concise resin composite bonded to sandblasted amalgam gave the highest mean shear strengths and were statistically similar to the etched enamel/Concise resin composite controls.
CONCLUSION
One would expect sandblasted amalgam surfaces to be associated with higher shear bond strengths than diamond bur roughened or polished amalgam surfaces.
目的
本研究旨在比较金属托槽粘结于银汞合金表面的剪切粘结强度。
方法
制作150个银汞合金样本，分别进行抛光、用金刚砂车针粗糙化处理或用50目氧化铝喷砂处理。热循环后测试剪切粘结强度，并与粘结于酸蚀釉质的对照样本进行比较。
结果
粘结于喷砂处理银汞合金的简易树脂复合材料、金属底漆/简易树脂复合材料和全粘结二代/简易树脂复合材料具有最高的平均剪切强度，且在统计学上与酸蚀釉质/简易树脂复合材料对照组相似。
结论
可以预期，喷砂处理的银汞合金表面比用金刚砂车针粗糙化处理或抛光处理的银汞合金表面具有更高的剪切粘结强度。
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