Seraj Bahman, Meighani Ghasem, Milani Shabnam, Fatemi Mostafa
Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Front Dent. 2019 Nov-Dec;16(6):421-428. doi: 10.18502/fid.v16i6.3441. Epub 2019 Dec 20.
Considering the importance of timesaving in pediatric dentistry, if the efficacy is achieved along with shorter working time and less technical sensitivity, the behavior management of young patients can be anticipated. This study aimed to compare the effect of precuring and postcuring of total-etch and self-etch bonding agents on the microleakage of sealants.
This study was conducted on forty impacted third molars, which were surgically extracted. The samples were divided into five groups: 1. Control (etching and sealant), 2. Precured fifth-generation bonding agent (Adper Single Bond 2) and fissure sealant, 3. Postcured fifth-generation bonding agent (Adper Single Bond 2) and fissure sealant, 4. Precured seventh-generation bonding agent (Single Bond Universal) and fissure sealant, and 5. Postcured seventh-generation bonding agent (Single Bond Universal) and fissure sealant. All specimens were thermocycled (×1000), immersed in 0.5% basic fuchsine solution for 24 hours, sectioned, digitally photographed, and measured using the LAS EZ program. The data were analyzed using Kruskal-Wallis and Dunn's tests.
Leakage in the control group and the third group was significantly lower than that in other groups. In pairwise comparisons, a significant difference was found between the control group and the fifth group and between the third group and the fifth group.
The conventional method of sealant placement showed superior results in comparison with the use of an intermediate layer of the bonding agent.
考虑到在儿童牙科中节省时间的重要性，如果在缩短工作时间和降低技术敏感性的同时能达到疗效，那么对年轻患者的行为管理是可以预期的。本研究旨在比较全酸蚀和自酸蚀粘结剂预固化和后固化对窝沟封闭剂微渗漏的影响。
本研究对40颗外科拔除的阻生第三磨牙进行。样本分为五组：1. 对照组（酸蚀和窝沟封闭）；2. 预固化第五代粘结剂（Adper Single Bond 2）和窝沟封闭剂；3. 后固化第五代粘结剂（Adper Single Bond 2）和窝沟封闭剂；4. 预固化第七代粘结剂（Single Bond Universal）和窝沟封闭剂；5. 后固化第七代粘结剂（Single Bond Universal）和窝沟封闭剂。所有标本进行热循环（×1000次），浸入0.5%碱性品红溶液中24小时，切片，数码拍照，并使用LAS EZ程序测量。数据采用Kruskal-Wallis检验和Dunn检验进行分析。
对照组和第三组的渗漏明显低于其他组。在两两比较中，对照组与第五组之间以及第三组与第五组之间存在显著差异。
与使用粘结剂中间层相比，传统的窝沟封闭剂放置方法显示出更好的效果。
