Kimyai Soodabeh, Mohammadi Narmin, Oskoee Parnian Alizadeh, Chaharom Mohammad Esmaeel Ebrahimi, Bahari Mahmood, Sadr Alireza, Ahmadizenouz Ghazaleh
Department of Operative Dentistry, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
Dent Res J (Isfahan). 2012 Nov;9(6):700-5.
An appropriate bond between glass-ionomer and the superficial resin materials is very important for the success of sandwich technique. The aim of the present in vitro study was to evaluate the effect of three surface treatments of conventional glass-ionomer on its shear bond strength to giomer.
Sixty cylindrical specimens of a conventional glass-ionomer (GC Fuji II) were prepared and randomly divided into three groups (n = 20). The specimens in groups 1 and 2 were treated with total-etch adhesive resin (Single Bond) along with acid etching, and self-etch adhesive resin (FL-Bond II) on the set glass-ionomer, respectively. Specimens in group 3 were treated with self-etch adhesive resin (FL-Bond II) before initial setting of the glass-ionomer was complete. Then a giomer restorative (Beautifil II) was added to the specimens. Subsequent to thermocycling, the specimens were subjected to shear bond strength test. Failure modes were evaluated under a stereomicroscope. Data were analyzed by one-way analysis of variance and a post hoc Tukey test at a significance level of P < 0.05.
There were statistically significant differences in bond strengths between the groups (P < 0.0005). Differences in bond strengths between group 2 and other groups were significant (P < 0.0005) while the differences between groups 1 and 3 were not significant. Failures were predominantly of the cohesive type in all the groups.
Based on the results of this study, the use of self-etch adhesive resin (FL-Bond II) on the set glass-ionomer yielded the highest bond strength in the glass-ionomer/giomer sandwich technique.
对于夹层技术的成功而言，玻璃离子体与表面树脂材料之间形成适当的粘结非常重要。本体外研究的目的是评估常规玻璃离子体的三种表面处理对其与聚酸改性复合树脂粘结剂（聚酸复合树脂）的剪切粘结强度的影响。
制备60个常规玻璃离子体（GC Fuji II）圆柱形试件，并随机分为三组（n = 20）。第1组和第2组的试件分别用全酸蚀粘结树脂（Single Bond）加酸蚀处理，以及在凝固后的玻璃离子体上使用自酸蚀粘结树脂（FL-Bond II）处理。第3组的试件在玻璃离子体初始凝固完成前用自酸蚀粘结树脂（FL-Bond II）处理。然后向试件添加聚酸复合树脂修复材料（Beautifil II）。热循环后，对试件进行剪切粘结强度测试。在体视显微镜下评估失效模式。数据采用单因素方差分析和事后Tukey检验进行分析，显著性水平为P < 0.
