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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Influence of a series of organic and chemical substances on the translucency of resin composites.
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Influence of a series of organic and chemical substances on the translucency of resin composites.

机译：一系列有机和化学物质对树脂复合材料半透明性的影响。

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The objective of this study was to investigate the changes in the translucency of resin composites following a series of immersion treatments in organic and chemical substances. Color of resin composites was measured according to the CIELAB color scale relative to the standard illuminant D65 over a white and a black background. Translucency parameter (TP) of resin composites was calculated at baseline, and after sequential immersion: Step 1, porcine liver esterase (a substitute for a salivary esterase); Step 2, organic substances (mucin and serum) and phosphate-buffered saline (PBS) as a control; Step 3, chemical alteration agents [chlorhexidine (CH) and carbamide peroxide (CP)]; and Step 4, 2% methylene blue. Porcine liver esterase caused small changes in TP (DeltaTP = -0.5 to 0.2). After Step 2, DeltaTP values of three groups were similar in the range of -0.7 to 1.2. After Step 3, DeltaTP values of all groups were small in the range of -1.5 to 2.2. After Step 4, DeltaTP values were high and differences that varied by the resin composite and the immersion protocol were clearly observed (DeltaTP = -13.4 to -2.5). Changes in TP were mainly influenced by resin composite. After Step 4, mucin and serum groups showed generally small changes in TP compared to PBS group. It is a possibility that the high changes in TP after immersion in methylene blue is an indication of dye absorption which might be an indication of the degree of resin composite degradation.
机译：这项研究的目的是研究在有机和化学物质中进行一系列浸渍处理后，树脂复合材料的半透明性的变化。根据CIELAB色标相对于标准光源D65在白色和黑色背景上测量树脂复合材料的颜色。在基线和连续浸泡后计算树脂复合材料的半透明参数（TP）：步骤1，猪肝酯酶（唾液酯酶的替代品）;步骤2，以有机物质（粘蛋白和血清）和磷酸盐缓冲液（PBS）为对照;步骤3，化学改变剂[氯己定（CH）和过氧化脲（CP）];步骤4，2％亚甲蓝。猪肝酯酶引起TP的微小变化（DeltaTP = -0.5至0.2）。步骤2之后，三组的DeltaTP值在-0.7至1.2范围内相似。步骤3之后，所有组的DeltaTP值均在-1.5至2.2的范围内较小。步骤4之后，DeltaTP值很高，并且清楚地观察到随树脂复合材料和浸入方案而变化的差异（DeltaTP = -13.4至-2.5）。 TP的变化主要受树脂复合材料的影响。步骤4之后，与PBS组相比，粘蛋白和血清组的TP一般显示较小的变化。浸入亚甲基蓝后TP的高变化可能是染料吸收的指标，这可能是树脂复合材料降解程度的指标。

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