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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >The Effect of Adhesive Material and Surface Roughness on the Tensile Bond Strength between Some Elastomeric Impression Materials and Cold Cure Acrylic
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The Effect of Adhesive Material and Surface Roughness on the Tensile Bond Strength between Some Elastomeric Impression Materials and Cold Cure Acrylic

机译：粘合材料对一些弹性体印模材料与冷固化丙烯酸乙烯基抗拉伸粘合强度的影响

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Background: The detachment of impression materials from impression tray is considered as an important problem which is difficult to be detected clinically. Several attempts were used to handle this problem, as roughening the surface of the tray, perforating it, or by the use of adhesive solutions which are recommended to be used by manufacturers. Objectives: To determine the tensile bond strength of two elastomeric impression materials; polysulphide and polyether to cold-cure acrylic resin disks with or without tray adhesive application at different drying and surface treatment. Material and Methods: Eighty specimens prepared consisted of two disks with impression material sandwiched between, then divided into two groups; 40 specimens for each type of impression. The "PD" hold adhesive material was applied on the acrylic surfaces which were smooth and rough. The adhesive was allowed to dry for 2, 5, and 10 minutes before the application of impression materials. To determine tensile bond strength at the interface between the adhesive-acrylic, and the adhesive-impression materials, a universal Instron testing machine was used. Results: Polyether impression material showed higher tensile bond strength to cold-cure acrylic than polysulphide impression material, without adhesive application. However, after adhesive application, the bond strength to polyether decreased, while for polysulphide increased significantly. Roughening the acrylic surface significantly increased the bond strength for both impression materials with or without adhesive application. Also, increasing the drying time from 2 up to 10 minutes significantly increased the bond strength for both impression materials, and smooth and rough acrylic surfaces. Conclusions: Polyether impression showed higher bond strength to cold-cure acrylic than polysulphide impression, without adhesive application.
机译：背景：印模材料从印模托盘上脱落是临床上难以发现的一个重要问题。为了解决这个问题，我们做了几次尝试，比如将托盘表面粗糙化、穿孔，或者使用制造商建议使用的粘合剂溶液。目的：测定两种弹性印模材料的拉伸粘结强度；在不同干燥和表面处理条件下，使用或不使用托盘粘合剂的多硫化物和聚醚冷固化丙烯酸树脂圆盘。材料和方法：80例标本由两个圆盘组成，中间夹有印模材料，然后分为两组；每种印模40个样本。将“PD”保持胶材料涂敷在光滑粗糙的丙烯酸表面上。在应用印模材料之前，让粘合剂干燥2、5和10分钟。为了测定丙烯酸粘合剂和粘合剂印模材料之间界面的拉伸粘结强度，使用了通用Instron试验机。结果：聚醚印模材料与冷固化丙烯酸树脂的拉伸粘结强度高于聚硫化物印模材料，且无需使用粘合剂。然而，在使用粘合剂后，与聚醚的粘结强度降低，而对于多硫化物，粘结强度显著增加。无论是否使用粘合剂，对丙烯酸表面进行粗糙处理都会显著提高两种印模材料的粘合强度。此外，将干燥时间从2分钟增加到10分钟，可显著提高印模材料以及光滑和粗糙的丙烯酸表面的粘结强度。结论：在不使用粘合剂的情况下，聚醚印模对冷固化丙烯酸树脂的粘接强度高于多硫化物印模。

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