Influence of water concentration in an experimental self-etching primer on the bond strength to dentin.
Influence of water concentration in an experimental self-etching primer on the bond strength to dentin.
复制标题
实验自酸蚀底漆中水浓度对牙本质粘合强度的影响。
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
E. Piva
中科院分区：
文献类型：
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作者：
G. Lima;F. Ogliari;E. D. da Silva;C. Ely;F. Demarco;N. Carreño;C. Petzhold;E. Piva
目的
研究自酸蚀底漆溶剂中不同含水量对胶粘剂微拉伸强度的影响。
材料和方法
以0、5、10、20和40（重量%）的水为溶剂配制了五种实验自酸蚀底漆。还合成了实验粘合树脂（AD-50）以创建一个实验自蚀刻粘合剂系统。Clearfil SE Bond（CSEB）用作商业参考。将60颗牛切牙随机分为6组。去除颊侧牙釉质以暴露表面冠状牙本质;湿抛光该表面以创建标准化玷污层。冲洗后，除去水，使表面明显干燥。牙本质表面用底漆酸蚀后风干，涂上粘结树脂并光活化，然后放置复合树脂修复体。储存24 h后，用冷却的金刚石锯低速切片。测量微拉伸粘结强度，并用单因素ANOVA/Tukey检验（α = 0.05）分析数据。
结果
方差分析表明，底漆组合物是一个显着的因素，粘结强度。水浓度为40%（53.9 +/- 12.7 MPa）、20%（51.1 +/- 11.5 MPa）和10%（47.5 +/- 11.4 MPa）的底漆与CSEB（50.7 +/- 9.8 MPa）之间的粘结强度无显著差异。含水量为5%（38.6 +/- 12.9 MPa）和0%（31.5 +/- 7.5 MPa）的两组之间的粘结强度相似，但在统计学上显著低于其他组。
结论
底漆溶剂中的水浓度对该实验性自蚀刻粘合剂体系的粘合强度有显著影响。
PURPOSE
To investigate the influence of different water concentrations in the solvents of self-etching primers on microtensile bond strength (LTBS) of an experimental adhesive system.
MATERIALS AND METHODS
Five experimental self-etching primers with 0, 5, 10, 20 and 40 (wt%) water as solvent were formulated. An experimental adhesive resin (AD-50) was also synthesized to create one experimental self-etching adhesive system. Clearfil SE Bond (CSEB) was used as the commercial reference. Sixty bovine incisors were randomly separated into 6 groups. Buccal enamel was removed to expose the superficial coronal dentin; this surface was polished wet to create a standardized smear layer. After rinsing, water was removed, leaving the surface visibly dried. The dentin surfaces were etched with primer and air dried, adhesive resin was applied and photoactivated, then the composite resin restoration was placed. After storage for 24 h, the specimens were sectioned with a cooled diamond saw at low speed. Microtensile bond strength was measured and data were analyzed with one-way ANOVA/Tukey's test (alpha = 0.05).
RESULTS
ANOVA showed that primer composition was a significant factor for bond strength. There was no significant difference in bond strengths between the primers with a water concentration of 40% (53.9 +/- 12.7 MPa), 20% (51.1 +/- 11.5 MPa, and 10% (47.5 +/- 11.4 MPa), and CSEB (50.7 +/- 9.8 MPa). The groups with 5% (38.6 +/- 12.9 MPa) and 0% (31.5 +/- 7.5 MPa) water presented similar bond strengths amongst themselves but were statistically significantly lower than that of the other groups.
CONCLUSION
The water concentration in the primer solvent exercises a significant influence on the bond strength of this experimental self-etching adhesive system.