Gharizadeh Naghmeh, Kaviani Azita, Nik Samaneh
Assistant Professor, Department of Operative and Esthetic Dentistry, School of Dentistry, Jundishapour University of Medical sciences, Ahwaz, Iran.
Dent Res J (Isfahan). 2010 Winter;7(1):23-7.
The use of electric current during application of etch-and-rinse adhesive systems has been recently introduced to decrease microleakage. This study investigated the effects of an electric field produced by an experimental device for the application of a two-step etch-and-rinse adhesive on moist dentin surface.
Sixty freshly extracted human premolars were used for this study. In order to simulate real conditions, the pulpal pressure was set to 35 cm H(2)O for all the specimens. The teeth were divided into two groups: in group I, etch-and-rinse system (Single Bond) was applied with electric current while group II, etch-and-rinse system (Single Bond) was applied without electric current. Specimens were prepared for dye penetration test. The data were analyzed using Mann-Whitney U test.
The results showed that group I had less microleakage scores compared to group II (P = 0.047).
Based on the result of this study, it could be concluded that using electric current for applying adhesive systems had a significant effect on reducing microleakage.
最近引入了在酸蚀冲洗粘结系统应用过程中使用电流来减少微渗漏。本研究调查了一种用于两步酸蚀冲洗粘结剂的实验装置所产生的电场对湿润牙本质表面的影响。
本研究使用了60颗新鲜拔除的人类前磨牙。为模拟实际情况，所有标本的牙髓压力设定为35 cm H₂O。牙齿分为两组：第一组，在施加酸蚀冲洗系统（Single Bond）时施加电流，而第二组，在施加酸蚀冲洗系统（Single Bond）时不施加电流。制备标本进行染料渗透测试。数据采用曼-惠特尼U检验进行分析。
结果显示，与第二组相比，第一组的微渗漏评分更低（P = 0.047）。
基于本研究结果，可以得出结论，在应用粘结系统时使用电流对减少微渗漏有显著效果。
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