Colour stability of aesthetic brackets: ceramic and plastic
Colour stability of aesthetic brackets: ceramic and plastic
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美观托槽的颜色稳定性：陶瓷和塑料
DOI：
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发表时间：
2013
影响因子：
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通讯作者：
A. Ruellas
中科院分区：
文献类型：
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作者：
Hibernon Lopes Filho;L. H. Maia;M. V. Araújo;C. Elias;A. Ruellas
摘要背景：美观托槽的颜色稳定性可能因其组成、形态和表面性质而异，这可能因此影响其美观性能。目的：评估美学托槽（陶瓷和塑料）在模拟老化和染色后的颜色稳定性。方法：对12个市售陶瓷托槽和4个不同的塑料托槽进行评估。为了确定可能的颜色变化（ΔE*ab）和NBS（国家标准局）单位系统的值，在托槽老化和染色之前和之后进行CIE L*、a* 和B* 的分光光度颜色测量。采用单因素方差分析和Tukey多重比较检验（α = 0.05）进行统计分析。结果如下：不同材料（陶瓷和塑料）之间的颜色变化不显著（p > 0.05），但在相同组成或晶体结构的支架之间以及在商业品牌之间仍然存在显著差异（p < 0.001）。结论：颜色稳定性不能简单地通过了解材料类型和晶体组成或结构来确定。(Aust Orthod J 2013; 29：13-20）
Abstract Background: The colour stability of aesthetic brackets may differ according to their composition, morphology and surface property, which may consequently influence their aesthetic performance. Aims: To assess the colour stability of aesthetic brackets (ceramic and plastic) after simulating aging and staining. Methods: Twelve commercially manufactured ceramic brackets and four different plastic brackets were assessed. To determine possible colour change (ΔE*ab) and the value of the NBS (National Bureau of Standards) unit system, spectrophotometric colour measurements for CIE L*, a* and b* were taken before and after the brackets were aged and stained. Statistical analysis was undertaken using a one-way ANOVA analysis of variance and a Tukey multiple comparison test (α = 0.05). Results: The colour change between the various (ceramic and plastic) materials was not significant (p > 0.05), but still varied significantly (p < 0.001) between the brackets of the same composition or crystalline structure and among commercial brands. Conclusion: Colour stability cannot be confirmed simply by knowing the type of material and crystalline composition or structure. (Aust Orthod J 2013; 29: 13-20)