• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Prosthetic Dentistry >Effect of ceramic material and resin cement systems on the color stability of laminate veneers after accelerated aging
【24h】

Effect of ceramic material and resin cement systems on the color stability of laminate veneers after accelerated aging

机译：陶瓷材料和树脂水泥系统对加速老化后层压贴面色稳定性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Statement of problemLaminate veneers are susceptible to color change during clinical service. Studies that compare the effects of different ceramic and resin cement systems on color stability are lacking. PurposeThe purpose of this in?vitro study was to evaluate the color stability of laminate veneers after accelerated aging using different ceramic and resin cement systems. Material and methodsCeramic specimens (N=168; shade A1; thickness, 0.50 ±0.05 mm; diameter, 10.00 ±0.10 mm) were prepared using nanofluorapatite and lithium disilicate (high translucency [HT] to low translucency [LT]) ceramics. Light-polymerizing (LP) cements were classified by brightness (high or low). Dual-polymerizing cements were classified by composition (base-only [DB] or base-catalyst [DC]) for comparison of color stability on the basis of polymerization type. DB cement was light-polymerizing, whereas DC cement was dual-polymerizing. They were further classified by shade (transparent, white, or yellow [n=7, each]). Color difference (ΔE) values were obtained by spectrophotometric quantification of L* (lightness), a* (green-red), and b* (blue-yellow) values before and after aging. The Kruskal-Wallis, Mann-WhitneyU, Wilcoxon signed rank, and Bonferroni post hoc tests were used for statistical analysis. ResultsAfter specimens were subjected to accelerated aging, HT ceramic specimens luted with yellow-shade DC cement exhibited the greatest color change (ΔE=2.11), whereas HT and LT ceramic specimens luted with low-brightness LP cement exhibited the least color change (ΔE=1.37). In HT ceramic specimens, which exhibited the greatest color change of the 3 ceramic types, transparent shade cement exhibited significantly lower ΔE values than the other shades with DB (P<.001) and DC cements (P=.010). High-brightness cement exhibited significantly higher ΔE values than low-brightness cement when used with NF (P=.017), HT (P<.001), and LT (P<.001) ceramics. The ΔE values of DB cement were not always lower than those of DC cement. For all specimens, the aging of laminate veneers decreased the L* values and increased the a* and b* values. ConclusionsCeramic and resin-cement systems affected the color stability of laminate veneers. Relative to other ceramics, HT lithium disilicate ceramics exhibited greater color changes upon aging. For HT ceramics, the use of transparent shade resin cement is recommended. The lower the brightness of resin cement, the higher the color stability of veneers. For luting of 0.5-mm-thick laminate veneers with dual-polymerizing cement, light polymerization did not yield better color stability than dual polymerization over time.
机译：临床服务期间，有问题的贴面的陈述易于色彩变化。缺乏比较不同陶瓷和树脂水泥系统对颜色稳定性的影响的研究。目的在使用不同陶瓷和树脂水泥系统后，可以评估加速后的层压贴面的颜色稳定性。材料和方法分流（N = 168;遮阳A1;厚度，0.50±0.05mm;直径，10.00±0.10mm）制备了纳米氟磷灰石和锂峰（高半透明[HT]至低半透明剂[LT]）陶瓷。通过亮度（高或低）分类光聚合（LP）水泥。通过组合物（仅基于碱基或碱催化剂[DC]）分类双聚合水泥，以基于聚合型比较颜色稳定性。 DB水泥是光聚合，而DC水泥是双聚合的。它们通过阴影（透明，白色或黄色[n = 7，每个]）进一步分类。通过在老化之前和之后的L *（亮度），*（绿色红色）和B *（蓝黄色）值的分光光度量化获得色差（ΔE）值。 Kruskal-Wallis，Mann-Whitneweu，Wilcoxon签名等级和Bonferroni后Hoc测试用于统计分析。对结果进行加速老化，HT陶瓷试样用黄色遮阳直流水泥封装，表现出最大的变色（ΔE= 2.11），而HT和LT陶瓷样品用低亮度LP水泥呈现最小变色（ΔE= 1.37）。在HT陶瓷标本中，表现出3个陶瓷类型的最大颜色变化，透明的遮阳水泥显着低于DB（P <.001）和DC水泥的其他阴影（P = .010）。当与NF（P = 0.017），HT（P <0.001）陶瓷一起使用时，高亮度水泥显示出比低亮度水泥显着更高的ΔE值。 DB水泥的ΔE值并不总是低于DC水泥的值。对于所有标本，层压贴面的老化降低了L *值并增加了A *和B *值。结论，树脂水泥系统影响了层压贴面的颜色稳定性。相对于其他陶瓷，HT锂静止陶瓷在老化时表现出更大的颜色变化。对于HT陶瓷，建议使用透明遮阳树脂水泥。树脂水泥的亮度越低，贴面的颜色稳定性越高。对于具有双聚合水泥的0.5毫米厚的层压贴面，光聚合不会随着时间的推移而不是双聚合产生更好的颜色稳定性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号