摘要
目的探讨不同的金属表面处理固位形式对金属与树脂间结合力的影响。方法将60个直径8mm、高4mm的圆柱体标准蜡型随机分为全珠组、半珠组、1/3珠组、失晶粗化组和对照组,铸造后与solidex树脂结合放入37℃恒温水浴箱中24h,4～60℃之间进行温度循环2000次。通过万能测力机以0.5mm/min的速度测定各组样本的抗张强度。结果失晶粗化组抗张强度与半珠组比较,差异无统计学意义(P>0.05),全珠组抗张强度与半珠组比较,差异有统计学意义(P<0.05),半珠组抗张强度与对照组比较,差异有统计学意义(P<0.05)。结论使用不同的金属表面固位形式对金属与树脂间结合力是有影响的。
Objective This explore researched the difference in tensile bond strength between the composite resin and cast Ni-Cr disk when different physical retention struction.Methods Sixty wax cylindrical-shaped patterns were formed additional mold with the following dimensions：disk 4 millimeter thick and 8 millimeter in diameter.The tensile wax specimens were prepared by full retention bead,semi-retention bead,particle-roughened surface,one third retention bead,the solidex composite resin was light-cured polymerized on the metal and all groups of specimens were tested after 24 hour immersion in distilled water at a 37 ℃ temperature,2 000 cycles at 4 to 60 ℃.A universal testing machine was used to measure the tensile bond strength of the specimens at a cross head speed of 0.5 mm/min.Results The linear contrast showed no significant difference between the mean tensile bond strengths of the semi-retention group and the particle-roughened surface group（P0.05）.There are however,a significant different between the mean tensile bond strength of the full retention bead group and semi-retention bead group（P0.05）.There are a significant different between the mean tensile bond strengths of the semi-retention group and the control group（P0.05）.Conclusion using different physical retention struction affect the bond strength in the composite resinmetal interface.
出处
《江西医学院学报》
CAS
2009年第12期94-96,共3页
Acta Academiae Medicinae Jiangxi
关键词
瓷聚合体
抗张强度
固位珠
粘接
retention bead
tensile bond strength
ceramic optimized polymer
adhesion
