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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Faria-e-Silva, A. L. [1] ; Fabiao, M. M. ; Arias, V. G. [2] ; Martins, L. R. M. [3]
Total Authors: 4
Affiliation:
[1] Univ Fed Sergipe, Dept Dent, Aracaju, SE - Brazil
[2] Sao Leopoldo Mandic Sch Dent, Dept Restorat Dent, Campinas, SP - Brazil
[3] Univ Estadual Campinas, Dept Restorat Dent, Piracicaba, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Operative Dentistry; v. 35, n. 5, p. 515-521, SEP-OCT 2010.
Web of Science Citations: 16
Abstract

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. (AU)

FAPESP's process: 07/01006-1 - Effect of activation mode of dual-cured resin cements on polymerization kinetics, mechanical properties, bond strength and stress generation
Grantee:André Luís Faria e Silva
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 07/00998-0 - Effect of activation mode of dual-cured resin cements on kinetics of conversion, mechanical properties, bond strenght and stress generation
Grantee:Luís Roberto Marcondes Martins
Support Opportunities: Regular Research Grants