通过自酸蚀和酸蚀冲洗策略评估两种通用牙本质粘结剂与表层牙本质的微剪切粘结强度。
Evaluation of micro shear bonding strength of two universal dentin bondings to superficial dentin by self etch and etch-and-rinse strategies.
作者信息
Daneshkazemi Pedram, Ghasemi Amir, Daneshkazemi Alireza, Shafiee Fahime
机构信息
Post graduate student, Department of orthodontics, Faculty of Dentistry, Islamic Azad University of Isfahan(khorasgan), Isfahan, Iran.
Associate Professor of Operative and esthetic Dentistry Department, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
出版信息
J Clin Exp Dent. 2018 Sep 1;10(9):e837-e843. doi: 10.4317/jced.54740. eCollection 2018 Sep.
BACKGROUND
Universal bondings can be used either with the etch-and-rinse or self-etch technique. Thus, the present study was done to evaluate the micro-shear bonding strength of two types of Universal Bondings to superficial dentin i.e self-etch and etch and rinse.
MATERIAL AND METHODS
The samples included 70 tooth blocks taken from 35 extracted sound premolar teeth. The superficial dentin was exposed to grinding by 800 grit silicon carbide Disk. The samples were randomly divided into 5 equal groups (14 samples in each group). Scotch bond universal (3M/USA) and All bond universal (BISCO/USA) were applied by self-etch and etch and rinse technique in group 1-4 and Adper Single bond 2 (3M/USA) was used in group 5 as etch and rinse for the control group. Z250 XT (3M/USA) resin composite was bonded in tygon tube on surfaces of samples and were cured. Specimens were stored in distilled water at 37ºC for 24 h and then subjected to the micro shear bond strength test in a universal testing machine at a crosshead speed of 0.5 mm/min. The data were analyzed by two-way ANOVA and Tukey test. Failure mode was determined using a stereomicroscope under 20X magnification. Significance level was considered 0/05.
RESULTS
The mean of micro-shear bonding strength and Standard Deviation of groups in Mega Pascal are respectively: 35.74 (6.21), 29.50 (3.89), 24.60 (3.53), 31.47 (4.73), 18.09 (3.87). The self-etch technique for Scotch bond Universal and the etch and rinse technique for All bond Universal showed higher micro shear bonding strength. Adper single bond 2 showed the lowest bond strength to a significant level in comparison to other groups (<0.05). Failure mode was predominantly adhesive.
CONCLUSIONS
The micro shear bonding strength of universal adhesives was highly bonding-dependent. Universal bondings had higher micro-shear bonding strength than Adper single bond 2. Bond strength, dentin, self-etch, etch-and-rinse, universal bonding.
背景
通用粘结剂可与酸蚀冲洗技术或自酸蚀技术配合使用。因此，本研究旨在评估两种通用粘结剂与表层牙本质之间的微剪切粘结强度，即自酸蚀和酸蚀冲洗。
材料与方法
样本包括从35颗拔除的健康前磨牙获取的70个牙块。用800目碳化硅盘对表层牙本质进行打磨。样本随机分为5组，每组14个样本。第1 - 4组分别采用自酸蚀和酸蚀冲洗技术应用Scotch bond universal（美国3M公司）和All bond universal（美国BISCO公司），第5组使用Adper Single bond 2（美国3M公司）作为酸蚀冲洗对照组。将Z250 XT（美国3M公司）树脂复合材料粘结在样本表面的泰贡管中并固化。样本在37℃蒸馏水中储存24小时，然后在万能试验机上以0.5 mm/min的十字头速度进行微剪切粘结强度测试。数据采用双向方差分析和Tukey检验进行分析。使用体视显微镜在20倍放大倍数下确定失效模式。显著性水平设定为0.05。
结果
以兆帕为单位，各组微剪切粘结强度的平均值和标准差分别为：35.74（6.21）、29.50（3.89）、24.60（3.53）、31.47（4.73）、18.09（3.87）。Scotch bond Universal的自酸蚀技术和All bond Universal的酸蚀冲洗技术显示出更高的微剪切粘结强度。与其他组相比，Adper single bond 2的粘结强度在显著水平上最低（<0.05）。失效模式主要为粘结性。
结论
通用粘结剂的微剪切粘结强度高度依赖于粘结情况。通用粘结剂的微剪切粘结强度高于Adper single bond 2。粘结强度、牙本质、自酸蚀、酸蚀冲洗、通用粘结剂。
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