Effects of etching and adhesive applications on the bond strength between composite resin and glass-ionomer cements

被引:10
|
作者
Pamir, Tijen [1 ]
Sen, Bilge Hakan [2 ]
Evcin, Ozgur [1 ]
机构
[1] Ege Univ, Sch Dent, Dept Restorat Dent, TR-35100 Izmir, Turkey
[2] Ege Univ, Sch Dent, Dept Endodontol, TR-35100 Izmir, Turkey
关键词
Glass-ionomer cements; Composite resins; Acid etching; Dental adhesives; RESTORATIVE MATERIALS; MICROLEAKAGE; DENTIN; ROOT; SANDWICH; FAILURE; SURFACE;
D O I
10.1590/S1678-77572012000600008
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objective: This study determined the effects of various surface treatment modalities on the bond strength of composite resins to glass-ionomer cements. Material and Methods: Conventional (Ketac (TM) Molar Quick Applicap (TM)) or resin-modified (Photac (TM) Fil Quick Aplicap (TM)) glass-ionomer cements were prepared. Two-step etch-rinse & bond adhesive (Adper (TM) Single Bond 2) or single-step self-etching adhesive (Adper (TM) Prompt (TM) L-Pop (TM)) was applied to the set cements. In the etch-rinse & bond group, the sample surfaces were pre-treated as follows: (1) no etching, (2) 15 s of etching with 35% phosphoric acid, (3) 30 s of etching, and (4) 60 s of etching. Following the placement of the composite resin (Filtek (TM) Z250), the bond strength was measured in a universal testing machine and the data obtained were analyzed with the two-way analysis of variance (ANOVA) followed by the Tukey's HSD post hoc analysis (p=0.05). Then, the fractured surfaces were examined by scanning electron microscopy. Results: The bond strength of the composite resin to the conventional glass-ionomer cement was significantly lower than that to the resin-modified glass-ionomer cement (p<0.001). No significant differences were determined between the self-etching and etch-rinse & bond adhesives at any etching time (p>0.05). However, a greater bond strength was obtained with 30 s of phosphoric acid application. Conclusions: The resin-modified glass-ionomer cement improved the bond strength of the composite resin to the glass-ionomer cement. Both etch-rinse & bond and self-etching adhesives may be used effectively in the lamination of glass-ionomer cements. However, an etching time of at least 30 s appears to be optimal.
引用
收藏
页码:636 / 642
页数:7
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