Back to Search
Start Over
Subsequent application of bonding agents to a one-step self-etch adhesive - Its effect with/without previous light-curing.
- Source :
-
Dental materials : official publication of the Academy of Dental Materials [Dent Mater] 2019 Dec; Vol. 35 (12), pp. e299-e309. Date of Electronic Publication: 2019 Sep 18. - Publication Year :
- 2019
-
Abstract
- Objective: The influence of light-curing of a one-step self-etch adhesive (1-SEA) prior to the application of different bonding agents (BA) on the micro-tensile bond strength (μTBS) to dentin after 24h and thermal cycling was investigated. Additionally, the degree of conversion was evaluated using Fourier-transform infrared spectroscopy.<br />Methods: Three ion-releasing BAs, BZF-21 (experimental BA), Clearfil SE Protect (CSP), and FL-Bond II (FL-II), were applied subsequently to G-Premio Bond (1-SEA, GPB). Prior to their application, GPB was either light-cured (10s, 1000mW/cm <superscript>2</superscript> ) or remained uncured. GPB was used as a control and Clearfil SE Bond 2 (CSE2) as a gold-standard 2-step reference. After resin-composite build-up and 24-h water storage (24h), half of the specimens were subjected to 15,000 thermal cycles (TC). Then, the specimens were sectioned into beams and tested under tensile load (1mm/min). The acquired data were analyzed using a 2-way ANOVA and Student's t-test with Bonferroni correction, and a two-parameter Weibull analysis, α=0.05.<br />Results: The μTBS of GPB increased significantly in the uncured groups with BZF-21 (24h: p<0.001, TC: p<0.001) and CSP (24h: p=0.039, TC: p<0.001), and in the light-cured group with CSP after TC (p=0.044). The groups with FL-II were not significantly different from GPB (p=1). No significant difference was found between CSE2 and the uncured groups GPB+BZF-21 (24h: p=1, TC: p=0.452) and GPB+CSP (24h: p=0.671, TC: p=0.566).<br />Significance: BZF-21 and CSP improved the μTBS of GPB to dentin both immediately and after TC. Higher μTBSs were obtained when GPB remained uncured prior to BA application.<br /> (Copyright © 2019 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1879-0097
- Volume :
- 35
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Dental materials : official publication of the Academy of Dental Materials
- Publication Type :
- Academic Journal
- Accession number :
- 31542248
- Full Text :
- https://doi.org/10.1016/j.dental.2019.08.108