Effect of glaze and chlorhexidine on physical and mechanical properties of bis-acryl resin: An in situ study.

Q3 Medicine Polimery w medycynie Pub Date : 2022-07-01 DOI:10.17219/pim/156868
Betina Chairelo Commar, Marcelle Danelon, Paulo Augusto Panitente, Emily Vivianne Freitas Da Silva, Sandro Basso Bitencourt, Valentim Adelino Ricrdo Barão, Clóvis Lamartine De Moraes Melo Neto, Marcelo Coelho Goiato, Daniela Micheline Dos Santos
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引用次数: 2

Abstract

Background: Temporary prosthesis protects the oral tissues, in addition to providing aesthetic look and masticatory function until a definitive prosthesis is manufactured.

Objectives: To evaluate the effect of glaze and 0.12% chlorhexidine (CHX) on the physical and mechanical properties of bis-acryl, and to evaluate the antimicrobial efficacy of CHX.

Material and methods: Eighty specimens of bis-acryl resin were made. Over 40 of them the glaze was applied. One specimen with and 1 specimen without glaze were placed in niches of an appliance manufactured for each patient. Each of the 20 volunteers received 2 devices. Initially, the volunteers used one device and treated it with sucrose for 7 days (control), and later they used the other device and treated it with sucrose and CHX for 7 days (test). Color, microhardness, roughness, surface energy, and insoluble extracellular polysaccharides (EPS) tests were performed. All results were submitted to the Tukey's test, with the exception of the EPS results, which were submitted to the Student's t test.

Results: The ΔE00 of the unglazed control group was significantly higher than that of the unglazed test group. In all groups, a significant decrease in microhardness occurred over time. At both times, the glaze significantly increased the microhardness of the specimens (in all the glazed groups). At the final time, the test glaze group showed significantly higher microhardness compared with the control glaze group. Roughness in the groups without glaze increased significantly with CHX treatment over time. At both times, the glaze generated a significant reduction in roughness in the control and test groups. There was a significant reduction in surface energy over time in all groups. In most comparisons, the glazed groups showed significantly higher surface energy values compared with the unglazed control group. At the final time point, the unglazed test group showed a significantly higher surface energy value than the unglazed control group; and the glazed test group showed a significantly higher surface energy value compared with the glazed control group. The resins that received CHX had a significantly lower amount of biofilm.

Conclusions: Color values were clinically acceptable in all tested groups. At both time points, the roughness values were clinically acceptable only in the glazed groups. Glaze increased the microhardness of the specimens. Microhardness and surface energy were reduced over time in all groups. Chlorhexidine can help prevent microhardness degradation. Glaze and CHX can increase surface energy. Chlorhexidine reduced the amount of bacterial biofilm.

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釉料和氯己定对双丙烯酸树脂物理力学性能的影响。
背景:临时假体除了提供美观的外观和咀嚼功能外,还可以保护口腔组织,直到最终的假体制造出来。目的:评价釉料与0.12%氯己定(CHX)对双丙烯酸酯物理力学性能的影响,并评价CHX的抗菌效果。材料与方法:制备了80个双丙烯树脂样品。其中超过40个被涂上了釉。每个患者将一个带釉和一个不带釉的标本放置在为每位患者制作的器具的壁龛中。20名志愿者每人收到2个设备。最初,志愿者使用一种装置并用蔗糖处理7天(对照组),后来他们使用另一种装置并用蔗糖和CHX处理7天(测试)。进行了颜色、显微硬度、粗糙度、表面能和不溶性细胞外多糖(EPS)测试。除了EPS结果提交给学生t检验外,所有结果都提交给Tukey’s检验。结果:未上釉对照组的ΔE00明显高于未上釉试验组。在所有组中,随着时间的推移,显微硬度显著降低。在这两种情况下,釉面均显著提高了样品的显微硬度(在所有釉面组中)。最后,试验釉组的显微硬度明显高于对照釉组。CHX处理后,未上釉组的粗糙度显著增加。在这两种情况下,釉料在对照组和试验组的粗糙度都显著降低。随着时间的推移,所有组的表面能量都显著减少。在大多数比较中,与未上釉的对照组相比,上釉组的表面能值明显更高。在最后时间点,未上釉实验组的表面能值显著高于未上釉对照组;釉面试验组的表面能值明显高于釉面对照组。接受CHX的树脂的生物膜数量明显减少。结论:所有试验组的颜色值均为临床可接受的。在这两个时间点上,只有釉面组的粗糙度值在临床上是可接受的。釉料提高了试样的显微硬度。随着时间的推移,所有组的显微硬度和表面能都有所降低。氯己定有助于防止显微硬度下降。釉料和CHX能增加表面能。氯己定减少了细菌生物膜的数量。
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
Polimery w medycynie
Polimery w medycynie Medicine-Medicine (all)
CiteScore
3.30
自引率
0.00%
发文量
9
审稿时长
53 weeks
期刊最新文献
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