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Influence of conditioning time on bond strength : Evaluation of self-etching adhesive systems

De Freitas Borges, M
Skupien, JA
Fernandes Montagner, A
da Costa Marchiori, J
Susin, AH
Published in General dentistry. 2011, vol. 59, no. 4, p. 274-78
Abstract The aim of this study was to evaluate the tensile bond strength of self-etching adhesive systems with different dentin conditioning times. Sixty caries-free, extracted third molars were selected, with the occlusal surface removed by a diamond saw disc. The specimens were embedded in epoxy resin and divided randomly into six groups (n = 10), according to the conditioning time and adhesive system used. After restoration, the specimens were stored in distilled water at room temperature for 24 hours; they then were submitted to the tensile bond strength test. The results were measured in MPa, then submitted to ANOVA and Tukey's test (P = 0.05). The adhesive system used and the length of dentin conditioning time were statistically significant (P < 0.05). The application time of the conditioner before photocuring did not have a significant effect on tensile bond strength. These results indicate that the resting time of adhesive above the dentin does not directly affect the bond strength of the adhesive system.
Keywords Acid Etching, Dental/methodsAdolescentComposite Resins/chemistryDental BondingDental Materials/chemistryDentin/ultrastructureDentin-Bonding Agents/chemistryHumansHydrogen-Ion ConcentrationMaterials TestingMethacrylates/chemistryResin Cements/chemistryStress, MechanicalTensile StrengthTime FactorsYoung Adult
PMID: 21903567
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Research group Groupe Krejci Ivo (médecine dentaire) (240)
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DE FREITAS BORGES, M et al. Influence of conditioning time on bond strength : Evaluation of self-etching adhesive systems. In: General dentistry, 2011, vol. 59, n° 4, p. 274-78. https://archive-ouverte.unige.ch/unige:26417

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Deposited on : 2013-02-20

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