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不同美学修复材料表面硬度的比较评估：一项研究。

Comparative Evaluation of the Surface Hardness of Different Esthetic Restorative Materials: An Study.

作者信息

Samuel Anoop, Raju Rinsa, Sreejith K B, Kalathil Binitha M, Nenavath Deepthi, Chaitra V S

机构信息

Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India.

Department of Conservative Dentistry and Endodontics, Rajas Dental College & Hospital, Kavalkinaru, Tamil Nadu, India.

出版信息

J Pharm Bioallied Sci. 2020 Aug;12(Suppl 1):S124-S128. doi: 10.4103/jpbs.JPBS_40_20. Epub 2020 Aug 28.

DOI:10.4103/jpbs.JPBS_40_20
PMID:33149442
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7595552/
Abstract

AIM

The aim of this study was to evaluate the surface hardness of a newly developed fiber-reinforced composite and bulkfill composites.

MATERIALS AND METHODS

Fiber-reinforced composite and other commercially available bulkfill composites were used. Fifteen cylindrical specimens (5 mm × 5 mm) were made from each material in metal template. Molds were filled in one increment for both bulkfill composites and fiber-reinforced composite and cured using Ivoclar blue phase light-curing unit at a wavelength of 850 mW/cm. A dark container was used to store specimens to keep dry at room temperature for 24 h before testing. Vickers hardness number (VHN) on the top and bottom surfaces of each specimen was measured by a microhardness tester. Data for VHN were analyzed by using analysis of variance (ANOVA) and pair-wise Newman-Keuls test.

RESULTS

No significant difference was observed in Vickers hardness test. The mean value of VHN on the top and bottom surfaces showed significant difference from each other. Fiber-reinforced composite showed the highest VHN as compared with other materials.

CONCLUSION

Fiber-reinforced composite has the highest Vickers hardness ratio indicating highest degree of conversion and better clinical performance.

摘要

目的

本研究旨在评估一种新开发的纤维增强复合材料和大块充填复合材料的表面硬度。

材料与方法

使用纤维增强复合材料和其他市售的大块充填复合材料。在金属模板中，用每种材料制作15个圆柱形试件（5毫米×5毫米）。大块充填复合材料和纤维增强复合材料的模具均一次性填充，并使用义获嘉蓝相光固化机在波长850毫瓦/平方厘米下固化。在测试前，使用深色容器储存试件，使其在室温下干燥24小时。用显微硬度计测量每个试件顶面和底面的维氏硬度值（VHN）。采用方差分析（ANOVA）和成对纽曼-基尔斯检验对VHN数据进行分析。

结果

维氏硬度测试未观察到显著差异。顶面和底面的VHN平均值彼此之间存在显著差异。与其他材料相比，纤维增强复合材料的VHN最高。

结论

纤维增强复合材料具有最高的维氏硬度比，表明其转化率最高，临床性能更好。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/aa71a71bac76/JPBS-12-124-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/9adeeb4a9d1a/JPBS-12-124-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/4bef5d338ff1/JPBS-12-124-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/e1c26d6a02f5/JPBS-12-124-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/194c3ab03ee8/JPBS-12-124-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/f20fd877b988/JPBS-12-124-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/25defef42c68/JPBS-12-124-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/aa71a71bac76/JPBS-12-124-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/9adeeb4a9d1a/JPBS-12-124-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/4bef5d338ff1/JPBS-12-124-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/e1c26d6a02f5/JPBS-12-124-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/194c3ab03ee8/JPBS-12-124-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/f20fd877b988/JPBS-12-124-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/25defef42c68/JPBS-12-124-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7762/7595552/aa71a71bac76/JPBS-12-124-g007.jpg

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