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首页> 外文期刊>Journal of Clinical and Diagnostic Research >Effect of Saliva on the Tensile Bond Strength of Different Generation Adhesive Systems: An In-Vitro Study
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Effect of Saliva on the Tensile Bond Strength of Different Generation Adhesive Systems: An In-Vitro Study

机译：唾液对不同世代胶粘剂系统拉伸粘合强度的影响：一项体外研究

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Background: Newer development of bonding agents have gained a better understanding of factors affecting adhesion of interface between composite and dentin surface to improve longevity of restorations. Objective: The present study evaluated the influence of salivary contamination on the tensile bond strength of different generation adhesive systems (two-step etch-and-rinse, two-step self-etch and one-step self-etch) during different bonding stages to dentin where isolation is not maintained. Materials and Methods: Superficial dentin surfaces of 90 extracted human molars were randomly divided into three study Groups (Group A: Two-step etch-and-rinse adhesive system; Group B: Two-step self-etch adhesive system and Group C: One-step self-etch adhesive system) according to the different generation of adhesives used. According to treatment conditions in different bonding steps, each Group was further divided into three Subgroups containing ten teeth in each. After adhesive application, resin composite blocks were built on dentin and light cured subsequently. The teeth were then stored in water for 24 hours before sending for testing of tensile bond strength by Universal Testing Machine. The collected data were then statistically analysed using one-way ANOVA and Tukey HSD test. Results: One-step self-etch adhesive system revealed maximum mean tensile bond strength followed in descending order by Two-step self-etch adhesive system and Two-step etch-and-rinse adhesive system both in uncontaminated and saliva contaminated conditions respectively. Conclusion: Unlike One-step self-etch adhesive system, saliva contamination could reduce tensile bond strength of the two-step self-etch and two-step etch-and-rinse adhesive system. Furthermore, the step of bonding procedures and the type of adhesive seems to be effective on the bond strength of adhesives contaminated with saliva.
机译：背景：粘合剂的最新发展使人们对影响复合材料与牙本质表面之间的界面附着力的因素有了更好的了解，从而提高了修复体的寿命。目的：本研究评估了唾液污染在不同粘合阶段对不同世代粘合剂体系（两步蚀刻和冲洗，两步自蚀刻和一步自蚀刻）的拉伸粘合强度的影响。不能保持隔离的牙本质。材料和方法：将90颗提取的人类磨牙的表面牙本质表面随机分为三个研究组（A组：两步蚀刻和冲洗粘合系统; B组：两步自蚀刻粘合系统; C组：一个步骤自蚀刻胶粘剂系统）根据使用的胶粘剂的不同世代。根据不同粘结步骤的治疗条件，将每个组进一步分为三个亚组，每个亚组包含十颗牙齿。施加粘合剂后，将树脂复合材料块构建在牙本质上，然后进行光固化。然后将牙齿在水中储存24小时，然后再通过Universal Testing Machine进行拉伸粘合强度测试。然后使用单向方差分析和Tukey HSD测试对收集到的数据进行统计分析。结果：一步自蚀刻胶粘剂系统在没有污染和唾液污染的条件下显示出最大的平均抗拉强度，然后依次是两步自蚀刻胶粘剂系统和两步蚀刻和漂洗胶粘剂系统。结论：与一步式自蚀刻粘合剂系统不同，唾液污染会降低两步式自蚀刻和两步蚀刻与冲洗粘合剂系统的拉伸粘合强度。此外，粘合程序的步骤和粘合剂的种类似乎对唾液污染的粘合剂的粘合强度有效。

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