Velasquez Lina Maria, Sergent Robert S, Burgess John O, Mercante D E
University of the Pacific, Arthur A Dugoni School of Dentistry, San Francisco, CA, USA.
Oper Dent. 2006 Jul-Aug;31(4):426-30. doi: 10.2341/05-52.
This study measured the shear bond strength (SBS) of 3 self-etching bonding agents to enamel and dentin with and without agitation at 3 different application times. The null hypotheses tested were that agitation and application time have no effect on bond strength. Occlusal surfaces of 180 recently extracted caries-free human molars were wet ground with 600 grit wet-dry silica carbide abrasive paper to obtain a flat enamel surface. The teeth were divided into 18 groups of 10 teeth. Three self-etching bonding agents, Clearfil SE BOND (Kuraray America), Xeno III (Dentsply) and AdheSE (Ivoclar-Vivadent) were applied using application times of 10, 20 or 30 seconds with or without agitation, thinned with a gentle stream of air and cured for 10 seconds, according to manufacturers' directions. Z100 (3M ESPE) composite, A2 shade, was placed over the cured adhesive and cured for 40 seconds. The samples were stored in distilled water at room temperature until testing. The samples were tested in shear to failure with a 1-mm/minute crosshead speed. After enamel shear bond strength testing, the teeth were again ground with 400 and 600-grit wet-dry SiC paper to obtain a flat dentin surface. The protocol used for preparing the enamel bond test samples was repeated, and the teeth were stored until testing in distilled water at room temperature. The samples were again tested in shear at a 1-mm/minute crosshead speed. Values were converted to MPa and data analyzed for intergroup differences using ANOVA and Tukey post-hoc tests. Agitation did not improve enamel SBS for any of the materials tested, but there was a significant difference in enamel SBS among materials: Clearfil SE Bond shear bond strength was greater than Xeno III, which was greater than AdheSE. At 10 seconds application time on dentin, agitation improved the Clearfil SE Bond SBS and, at 20 seconds application time on dentin, agitation significantly improved SBS to dentin for all systems tested. Agitation had no affect when the adhesive was applied to dentin for 30 seconds. Clearfil SE Bond SBS to dentin was significantly higher than the other self-etching adhesives tested except at 10 seconds without agitation.
本研究测量了3种自酸蚀粘结剂在3种不同涂布时间下，有无搅拌时与釉质和牙本质之间的剪切粘结强度（SBS）。所检验的无效假设为搅拌和涂布时间对粘结强度无影响。用600目干湿两用碳化硅砂纸对180颗近期拔除的无龋人类磨牙的咬合面进行湿磨，以获得平整的釉质表面。将牙齿分为18组，每组10颗。按照制造商的说明，使用3种自酸蚀粘结剂，即可乐丽SE BOND（可乐丽美国公司）、Xeno III（登士柏公司）和AdheSE（义获嘉伟瓦登特公司），在有无搅拌的情况下分别涂布10、20或30秒，用轻柔的气流吹干并固化10秒。将A2色的3M ESPE Z100复合树脂置于固化后的粘结剂上并固化40秒。将样本在室温下保存在蒸馏水中直至测试。以1毫米/分钟的十字头速度对样本进行剪切测试直至破坏。在完成釉质剪切粘结强度测试后，再次用400目和600目干湿两用碳化硅砂纸对牙齿进行研磨，以获得平整的牙本质表面。重复制备釉质粘结测试样本的方案，将牙齿保存在室温下的蒸馏水中直至测试。再次以1毫米/分钟的十字头速度对样本进行剪切测试。将数值换算为兆帕，并使用方差分析和Tukey事后检验分析组间差异。对于所测试的任何材料，搅拌均未提高釉质的SBS，但不同材料之间的釉质SBS存在显著差异：可乐丽SE BOND的剪切粘结强度大于Xeno III，而Xeno III又大于AdheSE。在牙本质上涂布10秒时，搅拌提高了可乐丽SE BOND的SBS；在牙本质上涂布20秒时，搅拌显著提高了所有测试体系与牙本质之间的SBS。当粘结剂在牙本质上涂布30秒时，搅拌没有影响。可乐丽SE BOND与牙本质之间的SBS显著高于所测试的其他自酸蚀粘结剂，但在无搅拌情况下涂布10秒时除外。
