Effects of halogen light irradiation variables (tip diameter, irradiance, irradiation protocol) on flexural strength properties of resin-based composites
Effects of halogen light irradiation variables (tip diameter, irradiance, irradiation protocol) on flexural strength properties of resin-based composites
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DOI：
10.1016/j.jdent.2008.04.019
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发表时间：
2008-08-01
影响因子：
4.4
通讯作者：
Fleming, Garry J. P.
中科院分区：
文献类型：
--
作者：
Bhamra, Gurcharn S.;Fleming, Garry J. P.
目的：卤素光辐照变量的研究（尖端直径、辐照度、辐照方案）对四种甲基丙烯酸树脂基复合材料（RBC）的弯曲强度和模量的影响。在不同的辐照度下辐照四个RBC（25 mm x 2 mm x 2 mm; n = 20/组（640和790 mW/cm（2）;标准和增强模式），具有不同的尖端（直径（8，11，13和25 mm）和8 mm Turbo光尖端直径，辐照度为880和1040 mW/cm（2）（标准和增强模式）。照射后，将样品在37 +/-摄氏度下储存在不透光容器中24小时，并在三点弯曲中进行测试。单因素方差分析在P = 0.05，指导必要的Tukey的校正在多个部分analysis. Results的校正，除了Weibull analysis.Results：平均三点弯曲强度，Weibull模量和弯曲模量的四个RBC材料，照射不同的辐照度，尖端直径和辐照协议突出显示没有显着差异，虽然值是材料的具体。同样的8 mm的传统和涡轮尖端直径导致不同的辐照度和辐照protocols.Conclusion：卤素尖端直径的实验范围内的限制，辐照度和辐照协议没有影响三点弯曲强度和模量数据没有显着差异。重叠照射方案的有效性得到支持的条件下测试。(C)2008爱思唯尔有限公司保留所有权利。
Objective: Investigation of halogen light irradiation variables (tip diameter, irradiance, irradiation protocol) on flexural strength and modulus of four methacrylate resin-based composites (RBCs).Methods: Rectangular bar-shaped specimens (25 mm x 2 mm x 2 mm; n = 20 per group) of four RBCs were irradiated at varying irradiances (640 and 790 mW/cm(2); standard and boosted mode) with different tip (diameters (8, 11, 13 and 25 mm) and for the 8 mm Turbo light tip diameter at irradiances of 880 and 1040 mW/cm(2) (standard and boosted mode). Following irradiation the specimens were stored in a light-proof container for 24 11 at 37 +/- degrees C and tested in three-point flexure. One-way analyses of variance were made at P = 0.05, guided as necessary by Tukey's correction in multiple partial analyses, in addition to a Weibull analysis.Results: The mean three-point flexure strengths, Weibull moduli and flexure moduli of the four RBC materials, irradiated with varying irradiances, tip diameters and irradiation protocols highlighted no significant differences although the values were material specific. Similarly the 8 mm conventional and Turbo tip diameter resulted in no significant differences for varying irradiances and irradiation protocols.Conclusion: Within the limitations of the experiment halogen tip diameter, irradiance and irradiation protocol have no influence on three-point flexural strength and modulus data. The efficacy of the overlapping irradiation regime was upheld for the conditions tested. (C) 2008 Elsevier Ltd. All rights reserved.