Batra Charu, Nagpal Rajni, Tyagi Shashi Prabha, Singh Udai Pratap, Manuja Naveen
Department of Operative Dentistry, Seema Dental College, Rishikesh, Utrakhand, India.
J Investig Clin Dent. 2014 Aug;5(3):226-36. doi: 10.1111/jicd.12039. Epub 2013 Apr 17.
To evaluate the effect of additional enamel etching on the shear bond strength of three self-etch adhesives.
Class II box type cavities were made on extracted human molars. Teeth were randomly divided into one control group of etch and rinse adhesive and three test groups of self-etch adhesives (Clearfil S3 Bond, Futurabond NR, Xeno V). The teeth in the control group (n = 10) were treated with Adper™ Single Bond 2. The three test groups were further divided into two subgroups (n = 10): (i) self-etch adhesive was applied as per the manufacturer's instructions; (ii) additional etching of enamel surfaces was done prior to the application of self-etch adhesives. All cavities were restored with Filtek Z250. After thermocycling, shear bond strength was evaluated using a Universal testing machine. Data were analyzed using anova independent sample's 't' test and Dunnett's test. The failure modes were evaluated with a stereomicroscope at a magnification of 10×.
Additional phosphoric acid etching of the enamel surface prior to the application of the adhesive system significantly increased the shear bond strength of all the examined self-etch adhesives.
Additional phosphoric acid etching of enamel surface significantly improved the shear bond strength.
评估额外酸蚀釉质对三种自酸蚀粘结剂剪切粘结强度的影响。
在拔除的人磨牙上制备Ⅱ类箱形洞。将牙齿随机分为一组酸蚀冲洗粘结剂对照组和三组自酸蚀粘结剂试验组（Clearfil S3 Bond、Futurabond NR、Xeno V）。对照组（n = 10）的牙齿用Adper™ Single Bond 2处理。三个试验组进一步分为两个亚组（n = 10）：（i）按照制造商说明应用自酸蚀粘结剂；（ii）在应用自酸蚀粘结剂之前对釉质表面进行额外酸蚀。所有窝洞均用Filtek Z250修复。热循环后，使用万能试验机评估剪切粘结强度。数据采用方差分析、独立样本t检验和Dunnett检验进行分析。用放大10倍的体视显微镜评估失败模式。
在应用粘结系统之前对釉质表面进行额外的磷酸酸蚀显著提高了所有检测的自酸蚀粘结剂的剪切粘结强度。
对釉质表面进行额外的磷酸酸蚀显著提高了剪切粘结强度。
