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Marginal sealing ability of silorane and methacrylate resin composites in class II cavities: A scanning electron microscopic study.II类洞形中硅氧烷和甲基丙烯酸酯树脂复合材料的边缘封闭能力:一项扫描电子显微镜研究。
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2
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Braz Dent J. 2010;21(6):538-42. doi: 10.1590/s0103-64402010000600010.
3
Microleakage evaluation of silorane based composite versus methacrylate based composite.基于硅氧烷的复合材料与基于甲基丙烯酸酯的复合材料的微渗漏评估
J Conserv Dent. 2010 Jul;13(3):152-5. doi: 10.4103/0972-0707.71649.
4
Light-curing considerations for resin-based composite materials: a review. Part I.树脂基复合材料的光固化考量:综述。第一部分。
Compend Contin Educ Dent. 2010 Sep;31(7):498-505; quiz 506, 508.
5
Knoop microhardness mapping used to compare the efficacy of LED, QTH and PAC curing lights.用于比较 LED、QTH 和 PAC 光固化灯疗效的 Knoop 显微硬度测绘。
Oper Dent. 2010 Jan-Feb;35(1):58-68. doi: 10.2341/09-055-L.
6
Curing effectiveness of resin composites at different exposure times using LED and halogen units.使用发光二极管(LED)和卤素灯装置在不同曝光时间下树脂复合材料的固化效果。
Med Oral Patol Oral Cir Bucal. 2009 Jan 1;14(1):E51-6.
7
Curing-light intensity and depth of cure of resin-based composites tested according to international standards.根据国际标准测试的树脂基复合材料的固化光强度和固化深度。
J Am Dent Assoc. 2002 Apr;133(4):429-34; quiz 491-3. doi: 10.14219/jada.archive.2002.0200.
8
Effectiveness of polymerization in composite restoratives claiming bulk placement: impact of cavity depth and exposure time.
Oper Dent. 2000 Mar-Apr;25(2):113-20.
9
A comparison of four modes of evaluating depth of cure of light-activated composites.
J Dent Res. 1987 Mar;66(3):727-30. doi: 10.1177/00220345870660030401.

硅氧烷类和甲基丙烯酸酯类后牙复合树脂表面硬度及固化深度的比较评价:一项体外研究。

Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study.

作者信息

Agrawal Abhishek, Manwar Narendra U, Hegde Shubha G, Chandak Manoj, Ikhar Anuja, Patel Aditya

机构信息

Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College, Sawangi, Wardha, Mumbai, Maharashtra, India.

出版信息

J Conserv Dent. 2015 Mar-Apr;18(2):136-9. doi: 10.4103/0972-0707.153070.

DOI:10.4103/0972-0707.153070
PMID:25829693
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4379654/
Abstract

AIM

This in vitro study was carried out to compare the effect of LED light curing system on polymerization and hardness of silorane-based and methacrylate-based posterior composite resin.

MATERIALS AND METHODS

A total of 40 samples, 20 of silorane-based composite Filtek P-90 and 20 of methacrylate-based composite Heliomolar HB measuring 2 mm thickness and 8 mm diameter were prepared using Teflon molds and cured using LED curing light. The samples were polished and tested in Knoop hardness tester using a 50-gram load and dwell time of 15 seconds on top and bottom surfaces. The percentage depth of cure was calculated, and statistical analysis was performed using two-way ANOVA test and Student t- test.

RESULTS

Higher statistically significant values were seen for both the top and bottom surface hardness in silorane-based resins than methacrylate-based resins on LED light curing.

CONCLUSION

Greater depth of cure was achieved in silorane-based posterior composite than in methacrylate-based posterior composite resins with a statistically significant difference.

摘要

目的

进行本体外研究以比较发光二极管(LED)光固化系统对硅氧烷类和甲基丙烯酸酯类后牙复合树脂聚合及硬度的影响。

材料与方法

使用聚四氟乙烯模具制备总共40个样本,其中20个为硅氧烷类复合树脂Filtek P - 90,20个为甲基丙烯酸酯类复合树脂Heliomolar HB,样本厚度为2毫米,直径为8毫米,并使用LED固化灯进行固化。对样本进行抛光,然后在努氏硬度测试仪上使用50克载荷,在顶面和底面保持15秒的停留时间进行测试。计算固化深度百分比,并使用双向方差分析测试和学生t检验进行统计分析。

结果

在LED光固化下,硅氧烷类树脂顶面和底面的硬度在统计学上均比甲基丙烯酸酯类树脂具有更高的显著值。

结论

硅氧烷类后牙复合树脂比甲基丙烯酸酯类后牙复合树脂实现了更大的固化深度,且具有统计学上的显著差异。