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首页> 外文期刊>The Journal of Prosthetic Dentistry >Effect of polyhedral silsesquioxane (POSS) on the flexural strength and color of interim materials
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Effect of polyhedral silsesquioxane (POSS) on the flexural strength and color of interim materials

机译：多面体倍半硅氧烷（POSS）对临时材料的弯曲强度和颜色的影响

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Statement of problem Polyhedral silsesquioxane (POSS) nanofillers can reinforce interim materials. However, the interaction between the POSS and the brand and its effect on color are unknown. Purpose The purpose of this study was to determine the effect on the flexural strength, color, and color stability of 4 commercially available interim materials modified with 1 wt% POSS. Material and methods Four commercial interim resin materials were used in this study: Jet, Trim, Temphase, and Protemp. The flexural strength of the interim materials was measured with and without 1 wt% POSS with an Instron universal testing machine. The color of the interim material and the material with 1 wt% POSS were evaluated, followed by the evaluation of the color change after coffee staining. The data were analyzed with a 2-way analysis of variance (ANOVA) followed by the Tukey standardized range test (HSD) to determine statistical significance (α=.05). Results POSS enhanced the flexural strength of Protemp and Trim but had no effect on Temphase and Jet. POSS had a significant affect on the color (L*, a*, b*), but only 2 pairwise differences (in L* Trim versus Trim POSS and in a* Temphase versus Temphase POSS) were detected. The effect of POSS on color change after coffee staining was minimal. POSS only had a significant effect on ΔL, and only 1 pairwise difference was detected (Temphase versus Temphase POSS). The collapsed means revealed significant differences in color change among brands after coffee staining. Conclusions The reinforcement effect of POSS on flexural strength depended on the brand, suggesting that the chemistry of the resin affects the ability of POSS to modify mechanical properties. POSS affected the initial color of the interim materials but had little effect on the color change after coffee staining.
机译：问题陈述多面硅倍半氧烷（POSS）纳米填料可以增强临时材料。但是，尚不知道POSS与品牌之间的相互作用及其对颜色的影响。目的本研究的目的是确定对4种用1 wt％POSS改性的市售中间材料的挠曲强度，颜色和颜色稳定性的影响。材料和方法本研究中使用了四种商业中间树脂材料：喷射，修整，Temphase和Protemp。使用Instron通用测试机在有和没有1 wt％POSS的情况下测量中间材料的弯曲强度。评估中间材料和具有1 wt％POSS的材料的颜色，然后评估咖啡染色后的颜色变化。数据采用2方差分析（ANOVA）进行分析，然后采用Tukey标准化范围检验（HSD）进行分析，以确定统计学意义（α= .05）。结果POSS增强了Protemp和Trim的抗弯强度，但对Temphase和Jet没有影响。 POSS对颜色（L *，a *，b *）有显着影响，但是仅检测到2个成对的差异（在L * Trim与Trim POSS中以及在a * Temphase与Temphase POSS中）。咖啡染色后，POSS对颜色变化的影响极小。 POSS仅对ΔL有显着影响，并且仅检测到1个成对的差异（Temphase与Temphase POSS）。塌陷意味着咖啡染色后品牌之间的颜色变化存在显着差异。结论POSS对弯曲强度的增强效果取决于品牌，这表明树脂的化学性质会影响POSS改变机械性能的能力。 POSS影响中间材料的初始颜色，但对咖啡染色后的颜色变化影响很小。

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