Effect of low temperature and room temperature on the depth of cure of bulk-fill composite resins

IF 0.6 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Bioscience Journal Pub Date : 2023-01-20 DOI:10.14393/bj-v39n0a2023-63528

Anna Flávia Esteves Ferreira, Ingrid Melo Silva, L. Dietrich, Marcelo Dias Moreira de Assis Costa, Cláudia Maria de Oliveira Andrade, Victor da Mota Martins

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引用次数: 0

Abstract

The study analyzed the influence of temperature on the depth of cure of bulk-fill composite resins. Three discs (ISO 4049/2000) from each group were made, and four restorative materials were investigated: Opus Bulk-Fill Flow, Opus Bulk-Fill APS, Filtek™ One Bulk-Fill, and Filtek™ Bulk-Fill Flow. They were light-cured (Gnatus ± 1,200 mW/cm2) for 20 seconds, varying the temperature (23°C and 5°C) and simulating the use of the product both at room temperature and under refrigeration. The materials were inserted in aluminum matrices with 10 mm in depth and 4 mm in diameter. A clear film strip and a glass microscope slide were positioned at the top and bottom surfaces. The material was condensed and light-cured with the tip of the light source in close contact, for 20 seconds on the top surface. Immediately after irradiation, the samples were removed from the mold, and the uncured part was removed with a plastic spatula. The measurement was performed with a micrometer ± 0.1 mm, and the value was divided by 2. The data were analyzed with two-way ANOVA at a significance of 0.05. There was a statistical difference in the temperature between the results obtained in Opus Bulk-Fill APS (p <0.001) and Filtek™ Bulk-Fill Flow (p = 0.018) resins. For the temperature of 5°C, Filtek™ Bulk-Fill Flow showed a statistical difference compared to the other resins, while Opus Bulk-Fill Flow and Opus Bulk-Fill APS did not. For the temperature of 23°C, Filtek™ Bulk-Fill Flow maintained the statistical difference from the others, but Filtek™ One Bulk-Fill and Opus Bulk-Fill APS did not present statistical differences. Storing the Filtek™ Bulk-Fill Flow composite resin in the refrigerator caused a greater depth of cure than the other resins, and the depth of cure decreased at room temperature. As for Opus Bulk-Fill APS, the depth of cure decreased proportionally to the temperature decrease. The temperature may affect the depth of cure of some composite resins.

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低温和室温对本体填充复合树脂固化深度的影响

研究了温度对块体填充复合树脂固化深度的影响。每组制作3个圆盘(ISO 4049/2000)，并研究4种修复材料:Opus Bulk-Fill Flow、Opus Bulk-Fill APS、Filtek One Bulk-Fill和Filtek Bulk-Fill Flow。它们被光固化(Gnatus±1200 mW/cm2) 20秒，改变温度(23°C和5°C)，并模拟在室温和冷藏下使用该产品。将材料插入深10mm、直径4mm的铝基体中。透明薄膜条和玻璃显微镜载玻片分别放置在顶部和底部表面。将材料与光源的尖端紧密接触，在顶部表面进行冷凝和光固化，时间为20秒。辐照后立即将样品从模具中取出，用塑料抹刀去除未固化的部分。测量用千分尺±0.1 mm，数值除以2。数据分析采用双因素方差分析，显著性为0.05。在Opus Bulk-Fill APS (p <0.001)和Filtek™Bulk-Fill Flow (p = 0.018)树脂中获得的结果在温度上有统计学差异。当温度为5°C时，Filtek™Bulk-Fill Flow与其他树脂相比具有统计学差异，而Opus Bulk-Fill Flow和Opus Bulk-Fill APS则没有统计学差异。在23°C的温度下，Filtek™Bulk-Fill Flow与其他产品保持统计学差异，但Filtek™One Bulk-Fill和Opus Bulk-Fill APS没有统计学差异。将Filtek™Bulk-Fill Flow复合树脂储存在冰箱中，固化深度比其他树脂更大，在室温下固化深度降低。Opus块体填充APS的固化深度随温度的降低成比例减小。温度会影响某些复合树脂的固化深度。

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

Bioscience Journal Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

48 weeks

期刊介绍： The Bioscience Journal is an interdisciplinary electronic journal that publishes scientific articles in the areas of Agricultural Sciences, Biological Sciences and Health Sciences. Its mission is to disseminate new knowledge while contributing to the development of science in the country and in the world. The journal is published in a continuous flow, in English. The opinions and concepts expressed in the published articles are the sole responsibility of their authors.