Four-year water degradation of a total-etch and two self-etching adhesives bonded to dentin
Four-year water degradation of a total-etch and two self-etching adhesives bonded to dentin
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DOI：
10.1016/j.jdent.2008.04.011
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发表时间：
2008-08-01
影响因子：
4.4
通讯作者：
Feilzer, Albert J.
中科院分区：
文献类型：
--
作者：
Abdalla, Ali I.;Feilzer, Albert J.
目的：方法：采用全酸蚀粘接剂、自酸蚀粘接剂、自使用新鲜拔出的人第三磨牙。在每颗牙齿中，在咬合面中制备I类洞（4 mm x 4 mm），髓底延伸到牙本质中约1 mm。将牙齿分为三组（n = 18）。每组使用一种测试粘合剂用树脂复合材料“Clearfil APX”进行修复。对于每个实验组，进行3个测试程序（n = 6）：程序A：将牙齿在水中储存24 h（对照），然后纵向、颊舌向和近远中切片，得到1.0-1.2 mm厚的矩形板，在其上进行微拉伸测试。程序B：还对牙齿进行了切片;然而，在微拉伸试验（直接水储存）之前，将板在37 ℃的水中储存4年。程序C：在切片和微拉伸试验（间接水储存）之前，将牙齿在37 ℃的水中保存4年。在微拉伸测试的板坯被放置在一个万能试验机和负载施加在十字头速度为0.5 mm/min。结果：对于24 h的控制，有三个测试的粘合剂之间的粘结强度没有显着差异。间接蓄水4年后，粘结强度有所下降，但与24 h相比差异不显著。经过4年的直接水存储，所有测试的粘合剂的粘结强度显着降低相比，他们的24 h results.Conclusion：所有测试的粘合剂显示没有减少后，间接水暴露4年的粘结强度。在4年的直接水暴露后，所有测试的粘合剂产生的粘合剂无法抵抗劣化。(C)2008爱思唯尔有限公司版权所有。
Objectives: To evaluate effect of direct and indirect water storage on the microtensile dentin bond strength of one total-etch and two self-etching adhesives.Methods: The adhesive materials were: one total-etch adhesive; 'Admira Bond' and two self-etch adhesives; 'Clearfil SE Bond' and 'Hybrid Bond'. Freshly extracted human third molar teeth were used. In each tooth, a Class I cavity (4 mm x 4 mm) was prepared in the occlusal surface with the pulpal floor extending approximately 1 mm into dentin. The teeth were divided into three groups (n = 18). Each group was restored with the resin composite 'Clearfil APX' using one of the tested adhesives. For each experimental group 3 test procedures (n = 6) were carried out: Procedure A: the teeth were stored in water for 24 h (control), then sectioned longitudinally, buccolingually and mesiodistally to get rectangular slabs of 1.0-1.2 mm thickness on which a microtensile test was carried out. Procedure B: the teeth were also sectioned; however, the slabs were stored in water at 37 degrees C for 4 years before microtensile testing (direct water storage). Procedure C: the teeth were kept in water at 37 C 4 years before sectioning and microtensile testing (Indirect water storage). During microtensile testing the slabs were placed in a universal testing machine and load was applied at cross-head speed of 0.5 mm/min.Results: For the 24 h control, there was no significant difference in bond strength between the three tested adhesives. After 4 years of indirect water storage, the bond strength decreased but the reduction was riot significantly different from those of 24 h. After 4 years of direct water storage, the bond strengths of all tested adhesives were significantly reduced compared to their 24 h results.Conclusion: All the tested adhesives showed no reduction in bond strength after indirect water exposure for 4 years. After 4-year direct water exposure, the bond produced by all tested adhesives was unable to resist deterioration. (C) 2008 Elsevier Ltd. All rights reserved.