Adhesive layer properties as a determinant of dentin bond strength
Adhesive layer properties as a determinant of dentin bond strength
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DOI：
10.1002/jbm.b.30320
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发表时间：
2005-08-01
影响因子：
3.4
通讯作者：
Kim, OY
中科院分区：
文献类型：
--
作者：
Bae, JH;Cho, BH;Kim, OY
本研究的目的是评估树脂粘结剂的性质可能会影响多瓶牙科粘结剂系统的微拉伸粘结强度（MTBS）的假设。为了改变树脂胶粘剂的性能，制备了不同配比的2，2-双（4-2-羟基-3-甲基丙烯酰氧基丙氧基苯基）丙烷（Bis-GMA）和三甘醇二甲基丙烯酸酯（TEGDMA）的实验树脂胶粘剂。研究了固化后即刻的转化度（DC-immed）、固化后48 h的转化度（DC-48 h）、由实验粘合剂制成的本体试样的弯曲强度（FS）、pH、剪切速率为1 S-1时的粘度以及粘合剂与牙本质的微拉伸粘结强度（MTBS）值。当Bis-GMA/TEGDMA为60/40时，树脂胶粘剂的MTBS和FS值最大。然而，pH值和粘度值随着粘合剂中Bis-GMA含量的增加而增加。当Bis-GMA含量超过60wt%时，体系粘度呈指数增长，限制了DC和FS，从而降低了粘结强度。树脂粘结剂强度越高，与牙本质的粘结强度越高。(c)2005 Wiley Periodicals，Inc.
The goal of this study is to evaluate the hypothesis that the properties of the resin adhesive might affect the microtensile bond strength (MTBS) of multibottle dental adhesive system. In order to alter the properties, the experimental resin adhesives containing 2,2-bis (4-2-hydroxy-3-methacryloyloxypropoxyphenyl)propane (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA) at various ratios were prepared. Degree of conversion immediately after curing (DC-immed), degree of conversion at 48 h after curing (DC-48h) of a thin coat of the experimental adhesives, the flexural strength (FS) of the bulk specimens made of the experimental adhesives, pH, viscosity at shear rate of 1 S-1, and the microtensile bond strength (MTBS) values of the adhesives to dentin were investigated. The maximum MTBS and FS values of the resin adhesives were observed when the ratio of Bis-GMA/TEGDMA was 60/40. However, pH and viscosity values increased with increasing Bis-GMA content in the adhesives. When Bis-GMA content was more than 60 wt %, the viscosity increased exponentially and restricted the DC and FS, and accordingly decreased the bond strength. The stronger the resin adhesives were, the higher the bond strength to dentin could be obtained. (c) 2005 Wiley Periodicals, Inc.