• 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 polymerization methods and thermal cycling on color stability of acrylic resin denture teeth.
【24h】

Effect of polymerization methods and thermal cycling on color stability of acrylic resin denture teeth.

机译：聚合方法和热循环对丙烯酸树脂假牙牙齿颜色稳定性的影响。

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 PROBLEM: Acrylic resin denture teeth are widely used due to the chemical bond to the acrylic resin of the denture base. However, discoloration of acrylic resin denture teeth can be a problem. PURPOSE: The purpose of this study was to investigate the effect of polymerization methods and thermal cycling on the color change of acrylic resin denture teeth. MATERIAL AND METHODS: Ten different brands of acrylic resin denture teeth were evaluated: Art Plus (AP), Biolux (BX), Biotone IPN (BI), Magister (MG), Mondial 6 (MD), Premium 6 (PR), SR Vivodent PE (SR), Trilux (TR), Trubyte Biotone (TB), and Vipi Dent Plus (VP). Each brand was divided into 2 groups (n=12); each group was subjected to 1 of 2 polymerization methods (microwave, 500 W for 3 minutes, or water bath, 74 degrees C for 9 hours). After polymerization, all of the specimens were thermal cycled between 5 degrees C and 55 degrees C with 30-second dwell times for 5000 cycles. The specimen colors were measured with a spectrophotometer, using the CIE L*a*b* system, at baseline (B), after polymerization (P), and after thermal cycling (T). Color differences (DeltaE) were calculated for periods between P and B (PB), T and B (TB), and T and P (TP). A DeltaE of < or =3.3 was considered clinically acceptable. The data were evaluated by 3-way repeated-measures ANOVA and the Tukey HSD test (alpha=.05). RESULTS: The highest DeltaE values were obtained for BI and SR teeth; these were significantly higher than the values obtained for the other brands (P<.05). There was no significant difference between the 2 polymerization methods. There was no significant difference between TB and PB for either polymerization method. CONCLUSIONS: The DeltaE values are within acceptable clinical limits for all brands, for both polymerization methods and different measurement periods.
机译：问题陈述：丙烯酸树脂假牙由于其与义齿基托丙烯酸树脂的化学键而被广泛使用。但是，丙烯酸树脂假牙的变色可能是一个问题。目的：本研究的目的是研究聚合方法和热循环对丙烯酸树脂假牙牙齿颜色变化的影响。材料和方法：评估了十个不同品牌的丙烯酸树脂假牙：Art Plus（AP），Biolux（BX），Biotone IPN（BI），Magister（MG），Mondial 6（MD），Premium 6（PR），SR Vivodent PE（SR），Trilux（TR），Trubyte Biotone（TB）和Vipi Dent Plus（VP）。每个品牌分为2组（n = 12）;每组均接受2种聚合方法中的1种（微波，在500 W下加热3分钟，或在水浴中，在74摄氏度下加热9小时）。聚合后，将所有样品在5摄氏度至55摄氏度之间进行热循环，驻留时间为30秒，共进行5000次循环。使用分光光度计，使用CIE L * a * b *系统，在基线（B），聚合（P）之后和热循环（T）之后，测量样品颜色。计算P和B（PB），T和B（TB）以及T和P（TP）之间的时间段的色差（DeltaE）。临床上可接受的DeltaE≤3.3。通过三向重复测量方差分析和Tukey HSD测试（alpha = .05）评估数据。结果：BI和SR牙齿的DeltaE值最高。这些显着高于其他品牌获得的值（P <.05）。两种聚合方法之间没有显着差异。两种聚合方法的TB和PB之间均无显着差异。结论：对于所有品牌，无论是聚合方法还是不同的测量周期，DeltaE值均在可接受的临床范围内。

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