• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Contemporary Clinical Dentistry >Comparative evaluation of water sorption of heat-polymerized polymethyl methacrylate denture base resin reinforced with different concentrations of silanized titanium dioxide nanoparticles: An In vitro study
【24h】

Comparative evaluation of water sorption of heat-polymerized polymethyl methacrylate denture base resin reinforced with different concentrations of silanized titanium dioxide nanoparticles: An In vitro study

机译：不同浓度硅烷化二氧化钛纳米粒子增强的热聚合聚甲基丙烯酸甲酯假牙基树脂吸水性能的比较评价：体外研究

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Statement of Problem: Polymethyl methacrylate (PMMA) is the most regularly used material in denture fabrication. Water sorption of denture base PMMA denture base resin has negative effects on physical properties, may lead to harmful tissue reactions in patients, and also has detrimental effects on color stability of the denture base. Purpose: The purpose of this study was to evaluate the effect on water sorption of heat-cured PMMA denture base material after incorporation of 1%, 3%, and 5% by weight of silanized titanium dioxide (TiO2) nanoparticles. Materials and Methods: For preparation of test samples, TiO2nanoparticles (PCode: 700339, Sigma-Aldrich, USA) were coated with a layer of trimethoxysilylpropylmethacrylate (PCode: 440159, Sigma-Aldrich, USA) before sonicated in monomer (MMA) (DPI Heat Cure) with the percentages 1%, 3%, and 5% by weight; after sonication, it was mixed with PMMA powder using conventional denture fabrication procedure. Then, we prepared total 40 samples for study; 10 samples for each four groups, i.e. that is one control group and three experimental groups. The first group was prepared from PMMA without addition of TiO2nanoparticles (control group), the second group with the addition of 1 wt% TiO2nanoparticles, the third group with 3 wt% TiO2nanoparticles, and the fourth one with 5 wt% TiO2nanoparticles (experimental groups). Water sorption test was then conducted on each sample. Results: Each group was evaluated for water sorption test, and it was found that increasing the wt% of nanoparticles, there was a significant decrease in water sorption of denture base resin from 1.74 to 1.46 mean wt%. P value suggested that the difference of mean percent increase across all groups was statistically significant with P= 0.034. Conclusion: The maximum decrease in water sorption was observed in denture base resin incorporated with 5 wt% TiO2nanoparticles.
机译：问题陈述：聚甲基丙烯酸甲酯（PMMA）是义齿制造中最常用的材料。义齿基托的吸水性PMMA义齿基托树脂对物理性能有负面影响，可能导致患者产生有害的组织反应，并且对义齿基托的颜色稳定性也有不利影响。目的：本研究的目的是评估在掺入1％，3％和5％（重量）的硅烷化二氧化钛（TiO2）纳米粒子后，热固化PMMA义齿基托材料对水吸附的影响。材料和方法：为了制备测试样品，在单体（MMA）（DPI Heat）中进行超声处理之前，先用三甲氧基甲硅烷基丙基甲基丙烯酸酯（PCode：440159，Sigma-Aldrich，USA）涂覆TiO2纳米颗粒（PCode：700339，Sigma-Aldrich，USA）。固化），其重量百分比分别为1％，3％和5％;超声处理后，使用常规义齿制作方法将其与PMMA粉末混合。然后，我们准备了总共40个样本进行研究;每四组10个样品，即一个对照组和三个实验组。第一组由不添加TiO2纳米颗粒的PMMA制成（对照组），第二组由TiO2纳米颗粒的添加量为1 wt％，第三组由TiO2纳米颗粒的添加量为3wt％，第四组为TiO2纳米颗粒的添加量为5 wt％（实验组）。 。然后对每个样品进行吸水率测试。结果：对每个组进行吸水率测试，发现增加纳米颗粒的wt％，义齿基体树脂的吸水率从1.74平均重量％显着降低至1.46。 P值表明，所有组的平均百分比增长差异具有统计学意义，P = 0.034。结论：在掺入5 wt％TiO2纳米颗粒的义齿基体树脂中，吸水率最大降低。

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