Hydrolytic stability of self-etch adhesives bonded to dentin
Hydrolytic stability of self-etch adhesives bonded to dentin
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DOI：
10.1177/154405910508401213
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发表时间：
2005-12-01
影响因子：
7.6
通讯作者：
Van Meerbeek, B
中科院分区：
文献类型：
--
作者：
Inoue, S;Koshiro, K;Van Meerbeek, B
功能性单体与羟基磷灰石发生化学反应，羟基磷灰石保留在由温和的自蚀刻粘合剂产生的亚微米混合层中。与4- MET和苯基-P相比，功能单体10- MDP与羟基磷灰石的相互作用最强烈，其钙盐似乎最水解稳定。我们研究了自蚀刻粘合剂的额外化学相互作用提高粘合稳定性的假设。基于10- MDP的粘合剂的微拉伸粘结强度（μ TBS）在100，000次循环后没有显著降低，但是对于基于4- MET的粘合剂和基于苯基-P的粘合剂，分别在50，000次和30，000次循环后显著降低。同样，基于10- MDP的粘合剂在100，000次热循环后界面超微结构没有变化，而基于4- MET和苯基- P的粘合剂都含有空隙和较不明确的胶原.这项研究的结果支持了这一概念，即长期耐久性的粘接牙本质债券取决于化学键的功能单体的潜力。
Functional monomers chemically interact with hydroxyapatite that remains within submicron hybrid layers produced by mild self- etch adhesives. The functional monomer 10- MDP interacts most intensively with hydroxyapatite, and its calcium salt appeared most hydrolytically stable, as compared with 4- MET and phenyl- P. We investigated the hypothesis that additional chemical interaction of self- etch adhesives improves bond stability. The micro- tensile bond strength (mu TBS) of the 10- MDP- based adhesive did not decrease significantly after 100,000 cycles, but did after 50,000 and 30,000 cycles, respectively, for the 4- MET- based and the phenyl-P- based adhesives. Likewise, the interfacial ultrastructure was unchanged after 100,000 thermocycles for the 10- MDP- based adhesive, while that of both the 4- MET- and phenyl- P- based adhesives contained voids and less- defined collagen. The findings of this study support the concept that long- term durability of adhesive-dentin bonds depends on the chemical bonding potential of the functional monomer.