Moosavi Horieh, Forghani Maryam, Managhebi Esmatsadat
Dental Materials Research Center and Department of Operative Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
Restor Dent Endod. 2013 May;38(2):73-8. doi: 10.5395/rde.2013.38.2.73. Epub 2013 May 28.
This study evaluated the effect of three different air-drying times on microleakage of three self-etch adhesive systems.
Class I cavities were prepared for 108 extracted sound human premolars. The teeth were divided into three main groups based on three different adhesives: Opti Bond All in One (OBAO), Clearfil S(3) Bond (CSB), Bond Force (BF). Each main group divided into three subgroups regarding the air-drying time: without application of air stream, following the manufacturer's instruction, for 10 sec more than manufacturer's instruction. After completion of restorations, specimens were thermocycled and then connected to a fluid filtration system to evaluate microleakage. The data were statistically analyzed using two-way ANOVA and Tukey-test (α = 0.05).
The microleakage of all adhesives decreased when the air-drying time increased from 0 sec to manufacturer's instruction (p < 0.001). The microleakage of BF reached its lowest values after increasing the drying time to 10 sec more than the manufacturer's instruction (p < 0.001). Microleakage of OBAO and CSB was significantly lower compared to BF in all three drying time (p < 0.001).
Increasing in air-drying time of adhesive layer in one-step self-etch adhesives caused reduction of microleakage, but the amount of this reduction may be dependent on the adhesive components of self-etch adhesives.
本研究评估三种不同空气干燥时间对三种自酸蚀粘结系统微渗漏的影响。
为108颗拔除的健康人恒前磨牙制备I类洞。根据三种不同的粘结剂将牙齿分为三个主要组：全优粘结剂（OBAO）、Clearfil S(3) Bond粘结剂（CSB）、强力粘结剂（BF）。每个主要组根据空气干燥时间分为三个亚组：不使用气流吹干、按照制造商说明吹干、比制造商说明多吹干10秒。修复完成后，对标本进行热循环处理，然后连接到流体过滤系统以评估微渗漏。使用双向方差分析和Tukey检验对数据进行统计学分析（α = 0.05）。
当空气干燥时间从0秒增加到制造商说明的时间时，所有粘结剂的微渗漏均降低（p < 0.001）。将BF的干燥时间增加到比制造商说明多10秒后，其微渗漏达到最低值（p < 0.001）。在所有三种干燥时间下，OBAO和CSB的微渗漏均显著低于BF（p < 0.001）。
一步法自酸蚀粘结剂粘结层空气干燥时间的增加会导致微渗漏减少，但减少量可能取决于自酸蚀粘结剂的粘结成分。
