Effects of saliva contamination on resin-resin bond strength
Effects of saliva contamination on resin-resin bond strength
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DOI：
10.1016/s0109-5641(03)00066-6
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发表时间：
2004-01-01
期刊：
影响因子：
5
通讯作者：
Sigurdsson, A
中科院分区：
文献类型：
--
作者：
Eiriksson, SO;Pereira, PNR;Sigurdsson, A
Objective.本研究的目的是评估唾液污染对树脂界面之间的微拉伸粘结强度（muTBS）的影响，并确定哪种去污方法最好地重建了原始树脂-树脂粘结强度。将96个Z-250、Renew、Clearfil APX和Pertac II光固化树脂复合材料圆柱体随机分为6组。对于每种材料，一组标本未被污染，作为对照。对于其他标本，每个块的顶面用唾液处理，（处理1）;强力干燥（处理2）;缓慢干燥、冲洗和干燥（处理3）;缓慢干燥、冲洗、干燥，并使用Single Bond、One-Step、Clearfil SE Bond或Prompt L-Pop粘合（处理4）;或缓慢干燥，但不冲洗，并使用相同的粘合剂粘合（处理5）。施加两个2 mm增量的树脂复合物并光固化。24小时后，将组件修剪用于微拉伸粘合测试，并以1 mm/min加载至失效。使用双向和单向ANOVA和Fisher's PLSD（p < 0.05）分析数据。对照值范围从Pertac II的45.1 MPa到APX的71.5 MPa。除了处理2中的两种材料之外，处理1导致所有测试材料的树脂-树脂粘结强度显着降低。Pertac II是处理3中唯一未显示与对照组存在统计学差异的材料。处理4重新建立了Z-250和Renew的对照值，处理5是唯一一个显示所有供试材料无统计学差异的处理。SEM观察显示，处理1的表面光滑，但处理3显示出一些火山口。处理4和5显示复合材料和粘合剂中的内聚失效的混合物。从树脂表面去除唾液污染的最可靠方法是使用粘合剂。(C)2003年牙科材料学院。由爱思唯尔有限公司出版。保留所有权利。
Objective. The purpose of this study is to evaluate the effects of saliva contamination on microtensile bond strength (muTBS) between resin interfaces and to determine which decontamination methods best re-established the original resin-resin bond strength.Materials and methods. Ninety-six light-cured resin composite cylinders of Z-250, Renew, Clearfil APX, and Pertac II were randomly divided into six groups. For each material, one group of specimens was not contaminated, serving as the control. For the other specimens, the top surface of each block was treated with saliva that was slowly dried (Treatment 1); dried forcefully (Treatment 2); slowly dried, rinsed, and dried (Treatment 3); slowly dried, rinsed, dried, and bonded with Single Bond, One-Step, Clearfil SE Bond, or Prompt L-Pop (Treatment 4); or slowly dried, but not rinsed, and bonded using the same adhesives (Treatment 5). Two 2-mm increments of resin composite were applied and light-cured. After 24 h, the assemblies were trimmed for microtensile bond testing and were loaded to failure at 1 mm/min. Data were analyzed using two-way and one-way ANOVA and Fisher's PLSD (p < 0.05).Results. Control values ranged from 45.1 MPa for Pertac II to 71.5 MPa for APX. Treatment 1 caused significant reduction in resin-resin bond strength for all materials tested but for two of the materials in treatment 2. Pertac II was the only material that did not show a statistical difference from control group for treatment 3. Treatment 4 re-established the control values for Z-250 and Renew and treatment 5 was the only one to show no statistical difference for all materials tested. SEM observation revealed a smooth surface in treatment 1, but treatment 3 showed a few craters. Treatment 4 and 5 showed a mixture of cohesive failure in the composite and adhesive.Significance. The most reliable method for decontaminating saliva from resin surfaces involves the application of adhesives. (C) 2003 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.