Effect of water on bonding of one-bottle self-etching adhesives
Effect of water on bonding of one-bottle self-etching adhesives
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DOI：
10.4012/dmj.27.172
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发表时间：
2008-03-01
影响因子：
2.5
通讯作者：
Yawaka, Yasutaka
中科院分区：
文献类型：
--
作者：
Hashimoto, Masanori;Fujita, Shinichi;Yawaka, Yasutaka
本研究评价了水对单瓶自蚀刻胶粘剂牙本质基质粘接的影响。牙本质基质分为湿牙本质和干牙本质两组。湿牙本质是粘结试验的正常基质，而干牙本质在干燥器中脱水24小时。然后将粘接的脱水牙齿分为两组：在水中或在干燥器中储存24小时。采用三种单瓶自蚀刻胶粘剂测定树脂与牙本质的微拉伸结合强度。此外，还通过扫描电镜和透射电镜进行了纳米泄漏评价。干牙本质组黏结强度显著大于湿牙本质组。干牙本质组黏附界面内的纳米渗漏量小于湿牙本质组。结果表明，结合强度和纳米渗漏的形成取决于结合基质（干牙本质还是湿牙本质）。一瓶自蚀刻胶粘剂可能会从牙本质小管中吸收水分（通过渗透作用诱导粘接），导致纳米渗漏形成，从而导致粘接强度下降。
This study evaluated the effect of water on dentin substrate bonding of one-bottle self-etching adhesives. Dentin substrates were divided into two groups: wet and dry dentin. Wet dentin is the normal substrate for bond testing whereas dry dentin was dehydrated in a desiccator for 24 hours. Bonded dehydrated teeth were then divided into two subgroups: stored in water or in desiccator for 24 hours. Microtensile bond strength of resin to dentin was measured using three one-bottle self-etching adhesives. In addition, nanoleakage evaluation was performed through the analyses of SEM and TEM micrographs. The bond strength of dry-dentin group was significantly greater than that of wet-dentin. Further, the amount of nanoleakage within the adhesive interface of dry-dentin group was less than that of wet-dentin. Results showed that bond strength and nanoleakage formation depended on the bonding substrate (wet versus dry dentin) before bonding. One-bottle self-etching adhesives might suck the water from dentinal tubules (luring bonding by osmosis, leading to nanoleakage formation and thus a decline in bond strength.