Leal C L, Queiroz Apv, Foxton R M, Argolo S, Mathias P, Cavalcanti A N
Oper Dent. 2016 Sep-Oct;41(5):E141-E148. doi: 10.2341/15-201-L.
The aim of this study was to evaluate the effect of low-thickness ceramic laminate translucency on water sorption and solubility in resin luting agents.
Ceramic slides (15×0.7 mm) were generated using lithium disilicate (IPS e.max Press, Ivoclar-Vivadent, Schaan, Liechtenstein) that were A1 in color and had decreasing degrees of translucency (high, medium, and low). A slide of transparent glass of similar size was used as the control. Under each slide, 15 specimens (8×0.5 mm) of differing composite materials from the same manufacturer (3M ESPE Dental Products, St Paul, MN, USA) were prepared (n=5): light-cured resin cement (RelyX Veneer); dual-cured resin cement (RelyX ARC); and flowable composite (Z350XT Flow). To evaluate the loss or gain of mass, the specimens were dried until a constant mass was reached. Then, they were immersed in water for seven days and weighed immediately following removal from water. Subsequently, the specimens were dried again until a constant mass was obtained. The mass measurements were used to calculate the water sorption and solubility. Statistical analyses were carried out using a two-way analysis of variance and the Tukey test.
Under the high-translucency ceramic slides, all of the luting agents showed similar performance regarding water sorption; the flowable composite resin and the light-cured resin cement had the lowest solubility values. Under the medium- and low-translucency surfaces, the dual-cured resin cement and the flowable composite resin showed better performance with respect to water sorption and solubility.
In the case of high-translucency laminates, luting agents with different activation methods might be used. However, even in thin sections, decreasing the translucency of the laminate led to significant loss of light penetration, indicating a decreased likelihood of the physical activation of the resin cement.
本研究旨在评估低厚度陶瓷贴面的半透明度对树脂粘结剂中水吸附和溶解性的影响。
使用二硅酸锂（IPS e.max Press，义获嘉伟瓦登特公司，列支敦士登公国沙恩）制作陶瓷薄片（15×0.7毫米），颜色为A1，半透明度逐渐降低（高、中、低）。使用一块尺寸相似的透明玻璃薄片作为对照。在每块薄片下方，制备了来自同一制造商（美国明尼苏达州圣保罗3M ESPE牙科产品公司）的不同复合材料的15个样本（8×0.5毫米）（n = 5）：光固化树脂粘结剂（RelyX Veneer）；双重固化树脂粘结剂（RelyX ARC）；以及可流动复合材料（Z350XT Flow）。为了评估质量的损失或增加，将样本干燥至恒重。然后，将它们浸入水中7天，并在从水中取出后立即称重。随后，再次将样本干燥至获得恒重。质量测量用于计算水吸附和溶解性。使用双向方差分析和Tukey检验进行统计分析。
在高透明度陶瓷薄片下，所有粘结剂在水吸附方面表现出相似的性能；可流动复合树脂和光固化树脂粘结剂的溶解度值最低。在中等和低透明度表面下，双重固化树脂粘结剂和可流动复合树脂在水吸附和溶解性方面表现出更好的性能。
对于高透明度贴面，可以使用具有不同活化方法的粘结剂。然而，即使在薄片情况下，降低贴面的半透明度也会导致光穿透率显著损失，这表明树脂粘结剂物理活化的可能性降低。
