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首页> 外文期刊>Contemporary Clinical Dentistry >Effect of dentin dehydration and composite resin polymerization mode on bond strength of two self-etch adhesives
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Effect of dentin dehydration and composite resin polymerization mode on bond strength of two self-etch adhesives

机译：牙本质脱水和复合树脂聚合方式对两种自蚀胶黏结强度的影响

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Background: Dual-cured composite resins are similar to self-cured composite resins in some of their clinical applications due to inadequate irradiation, lack of irradiation, or delayed irradiation. Therefore, incompatibility with self-etch adhesives (SEAs) should be taken into account with their use. On the other, the extent of dentin dehydration has a great role in the quality of adhesion of these resin materials to dentin. The aim of this study was to investigate the effect of dentin dehydration and composite resin polymerization mode on bond strength of two SEAs. Materials and Methods: A total of 120 dentinal specimens were prepared from extracted intact third molars. Half of the samples were dehydrated in ethanol with increasing concentrations. Then Clearfil SE Bond (CSEB) and Prompt L-Pop (PLP) adhesives were applied in the two groups. Cylindrical composite resin specimens were cured using three polymerization modes: (1) Immediate light-curing, (2) delayed light-curing after 20 min, and (3) self-curing. Bond strength was measured using universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with two-way ANOVA and Duncan post hoc tests. Statistical significance was defined at P Results: There were no significant differences for CSEB subgroups with hydrated and dehydrated dentin samples between the three different curing modes (P > 0.05). PLP showed significant differences between subgroups with the lowest bond strength in hydrated dentin with delayed light-curing and self-cured mode of polymerization. Conclusion: Within the limitations of this study, a delay in composite resin light-curing or using chemically cured composite resin had a deleterious effect on dentin bond strength of single-step SEAs used in the study.
机译：背景：由于辐射不足，缺乏辐射或延迟辐射，双固化复合树脂在某些临床应用中与自固化复合树脂相似。因此，在使用自蚀刻胶粘剂（SEA）时应考虑不相容性。另一方面，牙本质脱水的程度在这些树脂材料对牙本质的粘附质量中具有重要作用。这项研究的目的是研究牙本质脱水和复合树脂聚合方式对两种SEA粘结强度的影响。材料与方法：从完整的第三磨牙中提取出总共120个牙质标本。一半的样品在乙醇中以不断增加的浓度脱水。然后将Clearfil SE Bond（CSEB）和Prompt L-Pop（PLP）粘合剂应用于两组。使用以下三种聚合模式固化圆柱形复合树脂样品：（1）立即光固化;（2）20分钟后延迟光固化;以及（3）自固化。使用万能试验机以1mm / min的十字头速度测量粘合强度。使用双向ANOVA和Duncan事后检验分析数据。在P结果中定义了统计学显着性：在三种不同的固化模式之间，CSEB亚组的水合和脱水牙本质样品之间无显着差异（P> 0.05）。 PLP显示在水合牙本质中具有最低结合强度的亚组之间的显着差异，其中延迟的光固化和自固化聚合方式。结论：在本研究的范围内，延迟复合树脂的光固化或使用化学固化的复合树脂对本研究中使用的单步SEA的牙本质粘合强度具有有害影响。

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