Comparison of the contact angle of water on set elastomeric impression materials.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2018-05-01

Usama Nassar, Faraz Tavoossi, Yan Wen Pan, Nathan Milavong-Viravongsa, Giseon Heo, John A Nychka

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引用次数: 0

Abstract

Purpose: The hydrophilicity of some elastomeric impression materials has not been fully established. The purpose of this study was to measure and compare the advancing contact angle of water on the surface of several set elastomeric impression materials.

Materials and methods: We tested various consistencies of vinyl polysiloxane (VPS; Imprint 4) and vinyl polyether silicone (VPES; EXA'lence) with a polyether (PE; Impregum Soft) control. Impression discs (25.07 mm) were made using a metal die and ring. Deionized ultra-filtered water was placed on each disc and contact-angle measurements were made at 0, 15, 30, 45 and 60 s using a video contact angle drop shape analysis machine. The data were analyzed using repeated ANOVA and a post-hoc test with Bonferroni correction.

Results: VPS contact angles reached a mean of 10.1° ± 0.2° at 60 s vs. 40.7° ± 0.1° for VPES. Overall, VPS contact angles were smaller than those for VPES at all measured times. However, heavy and super quick heavy VPS had much higher contact angles at 0 s compared with other VPS consistencies. There was a significant difference in contact angles between VPS and VPES (mean difference 33.9°, p < 0.05) and between VPS and PE (mean difference 32.8°, p < 0.05) but not between VPES and PE (P = 0.196). VPS heavy and super quick heavy were significantly different from other VPS materials (p < 0.05), but not from each other (p = 1.00).

Conclusions: Set VPS is more hydrophilic than VPES. Contact-angle values of VPS indicated super hydrophilicity. VPES was hydrophilic, with measurements similar to the PE control. Thus, VPS impression materials may be excellent in terms of spreading and copying wet surfaces.

本刊更多论文

水在固定弹性压印材料上的接触角比较。

目的:一些弹性体印模材料的亲水性尚未完全确定。本研究的目的是测量和比较几种固定的弹性体印模材料表面的水的推进接触角。材料和方法:我们测试了不同浓度的乙烯基聚硅氧烷(VPS;压印4)和乙烯基聚醚有机硅(VPES;EXA'lence)与聚醚(PE;软)控制。压印盘(25.07毫米)是用金属模具和环制成的。在每个圆盘上放置去离子水，在0、15、30、45和60 s使用视频接触角液滴形状分析机进行接触角测量。使用重复方差分析和Bonferroni校正的事后检验对数据进行分析。结果:VPS 60 s接触角平均值为10.1°±0.2°，VPES为40.7°±0.1°。总体而言，在所有测量时间，VPS的接触角都小于VPES。而重VPS和超快重VPS在0 s时的接触角比其他VPS一致性高得多。VPS与VPES的接触角差异有统计学意义(平均差33.9°，p < 0.05)， VPS与PE的接触角差异有统计学意义(平均差32.8°，p < 0.05)，但VPES与PE的接触角差异无统计学意义(p = 0.196)。VPS重料和超快重料与其他VPS材料差异显著(p < 0.05)，但彼此间差异不显著(p = 1.00)。结论:Set VPS的亲水性优于VPES。VPS的接触角值显示出超亲水性。VPES具有亲水性，其测量结果与PE对照组相似。因此，VPS压印材料在湿表面的扩散和复制方面可能是优秀的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.