Effects of light intensity through resin inlays on the bond strength of dual-cured resin cement.
Effects of light intensity through resin inlays on the bond strength of dual-cured resin cement.
复制标题
通过树脂嵌体的光强度对双固化树脂水泥粘结强度的影响。
DOI：
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复制
发表时间：
2004
期刊：
影响因子：
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通讯作者：
J. Tagami
中科院分区：
文献类型：
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作者：
H. Tashiro;N. Inai;T. Nikaido;J. Tagami
目的
应用树脂涂覆技术，评价间接修复材料的光照强度、照射时间和厚度对双固化树脂粘接后即刻粘结强度的影响。
材料和方法
制备了340块复合体作为粘接面和4种厚度的间接修复体复合盘。在复合体表面涂覆低粘度树脂复合体，在水中浸泡24 h，浸泡后在涂覆树脂的表面涂抹双固化树脂水泥，在其上放置间接修复复合体。用常规卤素(40 S)和高强度(10、20、40 S)光单元对4种厚度的间接修复复合盘进行光照射。将试件在37℃的水中保存10分钟或24小时，并进行拉伸粘结试验。
结果
对于厚度为1 mm的复合材料，四种光固化方法粘结后10min和24 h的粘结强度无显著差异。对于厚度为3 mm和4 mm的复合材料，粘结后24 h的粘结强度显著高于常规卤素粘结后10min的粘结强度(40 S)和10 S、20 S的强光单元，而与40 S的强光单元相比差异无统计学意义。
结论
照射时间和照射光强对双固化树脂水泥粘接后即刻的粘结强度有较大影响。
PURPOSE
To evaluate the influence of the light intensity, irradiation time, and thickness of the indirect restoration composite on the bond strength of dual-cured resin cement immediately after cementation, applying the resin coating technique.
MATERIALS AND METHODS
Three hundred forty composite blocks as an adhesive surface and four thicknesses of indirect restoration composite disks were prepared. The surface of the composite blocks was coated with low-viscosity resin composite and immersed in water for 24 h. After immersion, dual-cured resin cement was applied to the resin-coated surface and the indirect restoration composite disks were placed on it. Light irradiation was performed through four thicknesses of indirect restoration composite disks with conventional halogen (40 s) and high intensity (10, 20, 40 s) light units. The specimens were stored in water at 37 degrees C for 10 min or 24 h, and the tensile bond test was performed.
RESULTS
For the 1-mm composite thickness, there were no significant differences in the bond strengths between 10 min and 24 h after cementation with the four light curing methods. For the composite thicknesses of 3 or 4 mm, the bond strength 24 h after cementation was significantly higher than that at 10 min after cementation with conventional halogen (40 s) and high-intensity light units at 10 s and 20 s, but there was no significant difference with the high-intensity light unit applied for 40 s.
CONCLUSION
The bond strength of dual-cured resin cement immediately after cementation could be greatly influenced by the irradiation time and the light intensity penetrating the indirect restoration composite.