Effect of application time of colloidal platinum nanoparticles on the microtensile bond strength to dentin
Effect of application time of colloidal platinum nanoparticles on the microtensile bond strength to dentin
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DOI：
10.4012/dmj.2009-125
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发表时间：
2010-11-01
影响因子：
2.5
通讯作者：
Sano, Hidehiko
中科院分区：
文献类型：
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作者：
Hoshika, Shuhei;Nagano, Futami;Sano, Hidehiko
本研究的目的是研究胶体铂纳米颗粒(CPN)的应用时间对粘结强度的影响。牙本质表面接受以下处理之一：(A)用10%柠檬酸-3%FeCl3溶液(10-3溶液)酸蚀；(B)用10-3溶液酸蚀，然后以CPN作为底漆，酸蚀10、20、30或60秒；(C)用CPN预涂10、20、30或60秒，然后用10-3溶液酸蚀。用4-META/MMA-TBB树脂将丙烯酸棒粘结到每个处理过的牙本质表面。将粘结试件切成横梁，进行微拉伸粘结强度测试。B组和C组牙本质表面经CPN处理30s后粘结强度最高。这意味着CPN底漆溶液可以提高树脂对牙本质的渗透性，也可以提高4-META/MMA-TBB树脂的转化率。在本研究的限制范围内，用0.1mN CPN底漆溶液处理，然后用水漂洗20秒，可获得高粘接强度。
The purpose of this study was to investigate the effect of application time of colloidal platinum nanoparticles (CPN) on bond strength. Dentin surfaces were subjected to one of the following treatments: (A) Etching with 10% citric acid-3% FeCl3 solution (10-3 solution); (B) Etching with 10-3 solution followed by applying CPN as a primer solution for 10, 20, 30, or 60 seconds; and (C) Priming with CPN for 10, 20, 30, or 60 seconds followed by etching with 10-3 solution. An acrylic rod was bonded to each treated dentin surface using 4-META/MMA-TBB resin. Bonded specimens were sectioned into beams for microtensile bond strength testing. In groups (B) and (C), highest bond strength was obtained when dentin surfaces were treated with CPN for 30 seconds. This meant that the CPN primer solution either enhanced the penetration of resin into dentin or the degree of conversion of 4-META/MMA-TBB resin. Within the limitations of this study, treatment with 0.1 mN CPN primer solution followed by 20 seconds of water rinsing resulted in high bond strength.