The aim of this study is to evaluate the degree of conversion of light-cured resin cement subjected to activation through the interposition of lithium disilicate ceramic produced according to two manufacturing techniques. Cylindrical specimens of RelyX™ Veneer resin cement were generated based on each manufacturing technique (CAD/CAM—computer aided design/computer assisted manufacturing, n = 5 or pressed ceramic technique, n = 5). Next, the specimens were washed in distilled water, dried with absorbent paper and stored in containers filled with distilled water at 37 °C for 24 h. Specimens from each group were subjected to attenuated total reflectance Fourier transform infrared (ATR-FTIR) in order to evaluate their degree of conversion. Data about the degree of conversion (%) were subjected to analysis of variance and to Student’s t-test (α = 0.05%). The degree of conversion of RelyX™ Veneer was statistically higher in the CAD/CAM manufacturing technique (39.83 ± 0.35%) than in the Press one (37.59 ± 0.62%). The light-cured resin cement activated through ceramic structure reinforced with lithium disilicate generated through the CAD/CAM manufacturing technique showed higher degree of conversion than the one generated through the Press manufacturing technique.

中文翻译：

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二硅酸锂陶瓷制造技术是否会影响光固化树脂水泥的转化率？

这项研究的目的是通过插入根据两种制造技术生产的二硅酸锂陶瓷，评估受到活化的光固化树脂水泥的转化度。根据每种制造技术（CAD / CAM-计算机辅助设计/计算机辅助制造，n = 5或压制陶瓷技术，n = 5）生成RelyX™单板树脂水泥的圆柱形样品。接下来，将样品在蒸馏水中洗涤，用吸水纸干燥，并在装有蒸馏水的容器中于37°C储存24小时。为了评估其转换程度，对每组样品进行了衰减的全反射傅立叶变换红外光谱（ATR-FTIR）。关于转化率（％）的数据经过方差分析和Student t检验（α= 0。05％）。在CAD / CAM制造技术中，RelyX™单板的转化度在统计学上更高（39.83±0.35％），比在印刷机中更高（37.59±0.62％）。通过CAD / CAM制造技术生成的用二硅酸锂增强的陶瓷结构活化的光固化树脂水泥的转化率高于通过Press制造技术生成的转化率。