Comparison of shear bond strength of universal adhesives on etched and nonetched enamel

被引:39
作者
Beltrami, Riccardo [1 ]
Chiesa, Marco [2 ]
Scribante, Andrea [2 ]
Allegretti, Jessica [2 ]
Poggio, Claudio [2 ]
机构
[1] Univ Pavia, Dept Brain & Behav Sci, Stat Sect, Via Palestro 3, I-27100 Pavia, Italy
[2] Univ Pavia, Dept Clin Surg Diagnost & Pediat Sci, Dent Sect, Via Palestro 3, I-27100 Pavia, Italy
关键词
Enamel; Shear bond strength; Universal adhesives; BUR-CUT ENAMEL; SELF-ETCH; ONE-STEP; FUNCTIONAL MONOMERS; DENTIN; INTERFACE; INFILTRATION; PERFORMANCE; STABILITY; SYSTEMS;
D O I
10.5301/jabfm.5000261
中图分类号
Q6 [生物物理学];
学科分类号
071011 [生物物理学];
摘要
Background: The purpose of this study was to evaluate the effect of surface pretreatment with 37% phosphoric acid on the enamel bond strength of different universal adhesives. Methods: One hundred and sixty bovine permanent mandibular incisors freshly extracted were used as a substitute for human teeth. The materials tested in this study included 6 universal adhesives, and 2 self-etch adhesives as control. The teeth were assigned into 2 groups: In the first group, etching was performed using 37% phosphoric acid for 30 seconds. In the second group, no pretreatment agent was applied. After adhesive application, a nanohybrid composite resin was inserted into the enamel surface by packing the material into cylindrical-shaped plastic matrices. After storing, the specimens were placed in a universal testing machine. The normality of the data was calculated using the Kolmogorov-Smirnov test. Analysis of variance (ANOVA) was applied to determine whether significant differences in debond strength values existed among the various groups. Results: Groups with phosphoric acid pretreatment showed significantly higher shear bond strength values than groups with no enamel pretreatment (p<0.001). No significant variation in shear strength values was detected when comparing the different adhesive systems applied onto enamel after orthophosphoric acid application (p>0.05). Conclusions: All adhesives provide similar bond strength values when enamel pretreatment is applied even if compositions are different. Bond strength values are lower than promised by manufacturers.
引用
收藏
页码:E78 / E83
页数:6
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