Mousavinasab Seyed-Mostafa, Farhadi Azadeh, Shabanian Mitra
Associate Professor, Department of Restorative Dentistry and Torabinejad Dental Research Centre, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Dent Res J (Isfahan). 2009 Spring;6(1):29-37.
Along with development of different dental adhesives, concerns about hydrolytic deg-radation of the adhesive components have arisen. The purpose of this study was to evaluate the in vitro influence of thermocycling, water storage and resin coating on the microshear bond strength of total etch and self etch adhesive systems to dentin.
The superficial coronal dentin of eighty intact third molars were exposed and divided into 5 equal groups. Dental adhesives including Scotch Bond Multi Purpose (SBMP), Single Bond (SB), Clearfil SE Bond (CSE), Prompt L-Pop (PLP), and Prompt L-Pop plus Margin bond (PLPM) were applied according to the manufacturers' instructions on prepared surfaces in the study groups, respectively. Then composite cylinders were bonded and specimens were divided into two subgroups. One subgroup was stored in water for 24 hours. The second subgroup was subjected to 3000 thermocycle shocks and then was stored in 37°C water for 3 months. Finally, all teeth were subjected to the microshear bond strength test. Data were analyzed using two-way ANOVA and Tukey HSD tests. One specimen similar to each subgroup was also prepared for SEM evaluation.
After one-day storage, the SBMP showed the highest bond strength followed by CSE, PLPM, SB and PLP. After three months storage, the highest bond strength was observed in SBMP followed by PLPM, CSE, SB, and PLP.
SBMP showed the best bond strength while CSE represented acceptable bond durability. Resin coating on PLP improved bond strength and durability.
随着不同牙科粘合剂的发展，人们对粘合剂成分的水解降解产生了担忧。本研究的目的是评估热循环、水储存和树脂涂层对全蚀刻和自蚀刻粘合剂系统与牙本质的微剪切粘结强度的体外影响。
将80颗完整的第三磨牙的冠部表层牙本质暴露，分为5个相等的组。分别按照制造商的说明，在研究组的制备表面上应用包括Scotch Bond多用途粘合剂（SBMP）、单组分粘合剂（SB）、Clearfil SE粘合剂（CSE）、Prompt L-Pop粘合剂（PLP）和Prompt L-Pop加边缘粘结剂（PLPM）在内的牙科粘合剂。然后粘结复合圆柱体，并将标本分为两个亚组。一个亚组在水中储存24小时。第二个亚组经受3000次热循环冲击，然后在37°C水中储存3个月。最后，对所有牙齿进行微剪切粘结强度测试。数据采用双向方差分析和Tukey HSD检验进行分析。还制备了与每个亚组相似的一个标本用于扫描电子显微镜评估。
储存一天后，SBMP显示出最高的粘结强度，其次是CSE、PLPM、SB和PLP。储存三个月后，观察到SBMP的粘结强度最高，其次是PLPM、CSE、SB和PLP。
SBMP显示出最佳的粘结强度，而CSE表现出可接受的粘结耐久性。PLP上的树脂涂层提高了粘结强度和耐久性。
