Activation Mode Effects on the Shear Bond Strength of Dual-cured Resin Cements

被引:25
作者
Faria-e-Silva, A. L. [1 ]
Fabiao, M. M.
Arias, V. G. [3 ]
Martins, L. R. M. [2 ]
机构
[1] Univ Fed Sergipe, Dept Dent, Aracaju, SE, Brazil
[2] Univ Estadual Campinas, Dept Restorat Dent, Piracicaba, SP, Brazil
[3] Sao Leopoldo Mandic Sch Dent, Dept Restorat Dent, Campinas, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
TREATED MAXILLARY PREMOLARS; INDIRECT RESTORATIONS; LIGHT-ACTIVATION; ADHESIVE SYSTEMS; BIOMECHANICAL BEHAVIOR; COMPOSITE RESTORATIONS; LUTING SYSTEMS; CURING MODES; PART II; DENTIN;
D O I
10.2341/10-051-L
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: This study evaluated the immediate (10-minute) and delayed (24-hour) bond strength of dual-cured resin cements that are light-activated either immediately or delayed (after five minutes) or chemically-activated only. Materials and Methods: Three dual-cured resin cements were evaluated: RelyX ARC, Panavia F and Enforce. Cylinders of resin cement were built up over resin composite blocks following the manufacturers' instructions for each luting agent. The cements were mixed, inserted into the molds and light-activated either immediately or after five minutes (delayed light activation). When no light activation was performed, the materials were protected from light exposure until testing. Half of the samples were tested at 10 minutes; the remaining samples were stored at 100% relative humidity for 24 hours when they were then tested (n=10). Data were submitted to three-way ANOVA and post-hoc Tukey's tests (alpha=0.05). The failure mode was evaluated under SEM. Results: RelyX ARC presented the highest values of shear bond strength, followed by Enforce. Panavia F showed the lowest values. Both immediate and delayed light activation caused the cements to present the highest means of shear bond strength. There was an improvement in bond strength after 24 hours of storage. Conclusions: RelyX ARC produced the highest bond strength, which was improved by light activation and storage for 24 hours.
引用
收藏
页码:515 / 521
页数:7
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