Evaluation of the fatigue behavior of the resin-dentin bond with the use of different methods
Evaluation of the fatigue behavior of the resin-dentin bond with the use of different methods
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DOI：
10.1002/jbm.b.10052
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发表时间：
2003-11-15
影响因子：
3.4
通讯作者：
Petschelt, A
中科院分区：
文献类型：
--
作者：
Frankenberger, R;Strobel, WO;Petschelt, A
直接粘合树脂复合材料的临床性能从根本上取决于持久的粘合力，以防止随着时间的推移形成间隙。本研究的目的是通过准静态和动态牙本质粘结强度来评估各种牙本质粘合剂的有效性，并确定在人工口腔环境中加载后边缘和内部间隙的形成。330人的第三磨牙在四周内提取。使用的粘合剂是A.R.T. Bond、OptiBond FL、Scotchbond Multi-Purpose Plus、Single Bond、Prime & Bond NT和One Up Bond F，用于粘合一种树脂复合材料（Z 250）。将90颗牙齿的颊面和舌面磨平，暴露牙本质，然后将树脂复合圆柱体粘结。使用剪切试验装置测定初始粘合强度（n = 10）和粘合剂疲劳极限（n = 20）。将180个圆锥形洞制备成牙本质盘并填充相同的材料。储存21天后，测量初始推出粘合强度（n = 10）和粘合剂疲劳极限（n = 20）。60颗磨牙MO洞（n 10）与边缘以下的水泥釉交界处进行了填充。在热机械加载（100，000 × 50 N和2500 × +5 ℃和+55 ℃之间的热循环）之前和之后，在SEM（× 200）下分析边缘间隙形成和内部适应（仅在加载之后）。静态和动态评价时，一瓶系统显示出较高的剪切粘结强度。然而，循环疲劳推出粘结强度导致更高的值为旧的多级系统。边缘和内部间隙分析证实了该结果，有利于较旧的粘合剂系统（p <0.05; Mann-Whitney U检验）。(C)2003 Wiley Periodicals，Inc.
The clinical performance of directly bonded resin composites is fundamentally dependent on durable adhesion to prevent gap formation over time. The goal of this investigation was to evaluate the effectiveness of various dentin adhesives by means of quasistatic and dynamic dentin bond strengths, and also to determine marginal and internal gap formation after loading in an artificial oral environment. Three hundred thirty human third molars were used within four weeks of extraction. Adhesives used were A.R.T. Bond, OptiBond FL, Scotchbond Multi-Purpose Plus, Single Bond, Prime & Bond NT, and One Up Bond F for bonding of one resin composite (Z 250). Buccal and lingual aspects of 90 teeth were ground flat to expose dentin; then resin composite cylinders were bonded. Initial bond strengths (n = 10) and adhesive fatigue limits (n = 20) were determined with the use of a shear test apparatus. One hundred eighty conical cavities were prepared into dentin discs and filled with the same materials. After 21 days of storage, initial push-out bond strengths (n 10) and adhesive fatigue limits (n = 20) were measured. Sixty molars with MO cavities (n 10) with margins below the cement-enamel junction were filled. Before and after thermomechanical loading (100,000 X 50 N and 2500 X therinocycling between + 5 and + 55 degreesC), marginal gap formation and internal adaptation (only after loading) were analyzed under a SEM (X 200). The one-bottle systems showed higher shear bond strengths when evaluated statically and dynamically. However, cyclic fatigue push-out bond strengths resulted in higher values for older multistep systems. Marginal and internal gap analysis confirmed the results, in favor of older adhesive systems (p < .05; Mann-Whitney U test). (C) 2003 Wiley Periodicals, Inc.