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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Changes in color and translucency of porcelain-repairing resin composites after thermocycling.
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Changes in color and translucency of porcelain-repairing resin composites after thermocycling.

机译：热循环后陶瓷修复树脂复合材料的颜色和半透明性变化。

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The objective of this study was to determine the changes in color and translucency of dental porcelain-repairing resin composites compared to dental porcelain after thermocycling. Color and spectral reflectance of three shades (A2, A3, and A3.5) of one brand of dental porcelain and three basic shades (A2, A3, and A3.5) and three combinations (A2/A3, A3/3.5, and A2/A3.5) of three brands of porcelain-repairing resin composites (ABT, FSP, and TCR) were measured, before and after thermocycling for 3000 cycles, relative to the illuminant D65. The specimen was 2 mm in thickness, and 1 mm of each shade was layered to make combined shades. Changes in color (DeltaE*ab) and translucency parameter (DeltaTP) were calculated. A general linear model by the material (porcelain or resin composite) and shade was used to compare differences (alpha = 0.05). The range of color changes was 0.68-1.67 in porcelain, 0.56-1.30 in ABT, 2.28-3.10 in FSP, and 0.36-1.15 in TCR. The range of DeltaTP was 0.45-0.96 in porcelain, -0.48 to 0.94 in ABT, -1.31 to 0.82 in FSP, and -0.51 to 1.91 in TCR. After thermocycling, changes in color and TP were correlated with the shade of the material, but not with the material. The discrepancy in the changes of color and translucency after thermocycling between porcelain and porcelain-repairing resin composites should be considered when selecting repairing materials.
机译：这项研究的目的是确定与热循环后的牙瓷相比，牙瓷修复树脂复合材料的颜色和透明度的变化。一种品牌的牙科瓷器的三种阴影（A2，A3和A3.5）和三种基本阴影（A2，A3和A3.5）以及三种组合（A2 / A3，A3 / 3.5和相对于光源D65，在热循环3000次之前和之后，测量了三种品牌的陶瓷修复树脂复合材料（ABT，FSP和TCR）的A2 / A3.5）。样品的厚度为2mm，并且将每个阴影的1mm分层以制成组合阴影。计算颜色（DeltaE * ab）和半透明参数（DeltaTP）的变化。使用材料（瓷或树脂复合材料）和阴影的通用线性模型比较差异（alpha = 0.05）。瓷的颜色变化范围为0.68-1.67，ABT为0.56-1.30，FSP为2.28-3.10，TCR为0.36-1.15。瓷器的DeltaTP范围是0.45-0.96，ABT的范围是-0.48至0.94，FSP的范围是-1.31至0.82，TCR的范围是-0.51至1.91。热循环后，颜色和TP的变化与材料的阴影有关，但与材料无关。选择修补材料时，应考虑瓷与瓷修复树脂复合材料之间热循环后颜色和半透明性的差异。

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