• 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 finishing and polishing procedures on the gap width between a denture base resin and two long-term, resilient denture liners.
【24h】

Effect of finishing and polishing procedures on the gap width between a denture base resin and two long-term, resilient denture liners.

机译：精加工和抛光程序对义齿基础树脂和两个长期弹性义齿衬垫之间的间隙宽度的影响。

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: The junction between a long-term, resilient denture liner and the denture base is difficult to finish and polish due to differences in the hardness of the materials. Gaps tend to form during finishing and polishing procedures. PURPOSE: This study measured the junctional gap between 2 long-term, resilient denture liners and a denture base material after different finishing and polishing procedures were performed. The surface smoothness of the 2 liner materials also was evaluated. MATERIAL AND METHODS: Molloplast-B and an experimental, heat-polymerized methyl siloxane-resin-based denture liner were processed (according to the manufacturer's instructions) against Lucitone 199 acrylic resin. Control specimens (n = 20) were 2 mm thick and flat. Experimental specimens (n = 64) were fabricated with a raised center section: a 3- x 5- x 15-mm half-cylindrical ridge with a junction at the top of the cylinder between the liner material and acrylic resin. The specimens were finished with 1 of 6 types of burs and polished with different combinations of rubber-impregnated acrylic polishers, pumice, and tin oxide. The finished specimens were examined and photographed with a scanning electron microscope, and the largest gap along the liner/denture base junction on each specimen was measured. Three-way analysis of variance without replication (P<.05) and post-hoc t tests were used to analyze the data and compare groups. RESULTS; Averaged across finishing and polishing techniques, a larger gap was recorded for the experimental liner material (22 microm) than for Molloplast-B (14 microm) (P<.00005). Qualitative evaluation suggested that the experimental liner material polished better than Molloplast-B. The smoothest surfaces were obtained when specimens were finished with fine-tooth cross-cut carbide burs and polished with both pumice and tin oxide. A comparison between polished and unpolished specimens, averaged over materials and finishing techniques, revealed that polishing reduced gap size (P=.015). CONCLUSION: Within the limitations of this study, the 2 denture liners tested behaved similarly. The results suggest that the size of the gap at the liner/denture base junction may be affected by finishing and polishing techniques and vary among materials.
机译：问题陈述：由于材料硬度的差异，长期，有弹性的义齿衬里和义齿基托之间的接合处很难完成和抛光。在精加工和抛光过程中容易形成间隙。目的：本研究测量了在执行了不同的精加工和抛光程序后，两个长期的，有弹性的假牙衬里和假牙基材之间的接合间隙。还评估了两种衬里材料的表面光滑度。材料和方法：根据Lucitone 199丙烯酸树脂对Molloplast-B和一种实验性的热聚合甲基硅氧烷树脂基假牙衬里进行了加工（根据制造商的说明）。对照样品（n = 20）厚2毫米且平坦。实验样品（n = 64）的中心部分是凸起的：3 x 5 x 15 mm的半圆柱形凸脊，衬里材料和丙烯酸树脂之间在圆柱体顶部有一个结。用6种类型的钻头中的一种完成标本，并用橡胶浸渍的丙烯酸抛光剂，浮石和氧化锡的不同组合进行抛光。检查完成的样品并用扫描电子显微镜照相，并测量沿每个样品上的衬里/义齿基结的最大间隙。使用无重复方差的三向分析（P <.05）和事后检验来分析数据和比较组。结果;根据精加工和抛光技术的平均值，实验衬里材料（22微米）的记录间隙大于Molloplast-B（14微米）的记录间隙（P <.00005）。定性评估表明，实验衬板材料的抛光效果优于Molloplast-B。当样品用细齿横切硬质合金钻头精加工并用浮石和氧化锡抛光后，可获得最光滑的表面。通过对抛光和未抛光样品的比较，对材料和精加工技术进行平均后得出，抛光减少了缝隙尺寸（P = .015）。结论：在本研究的范围内，测试的2种义齿衬垫的表现相似。结果表明，衬里/义齿基部接合处的间隙尺寸可能会受到精加工和抛光技术的影响，并且会因材料而异。

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