dc.creator | SADEK, Fernanda T. | |
dc.creator | CASTELLAN, Carina S. | |
dc.creator | BRAGA, Roberto R. | |
dc.creator | MAI, Sui | |
dc.creator | TJADERHANE, Leo | |
dc.creator | PASHLEY, David H. | |
dc.creator | TAY, Franklin R. | |
dc.date.accessioned | 2012-10-20T00:24:18Z | |
dc.date.accessioned | 2018-07-04T15:23:52Z | |
dc.date.available | 2012-10-20T00:24:18Z | |
dc.date.available | 2018-07-04T15:23:52Z | |
dc.date.created | 2012-10-20T00:24:18Z | |
dc.date.issued | 2010 | |
dc.identifier | DENTAL MATERIALS, v.26, n.4, p.380-386, 2010 | |
dc.identifier | 0109-5641 | |
dc.identifier | http://producao.usp.br/handle/BDPI/25779 | |
dc.identifier | 10.1016/j.dental.2009.12.009 | |
dc.identifier | http://dx.doi.org/10.1016/j.dental.2009.12.009 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1622444 | |
dc.description.abstract | Dentin bonding performed with hydrophobic resins using ethanol-wet bonding should be less susceptible to degradation but this hypothesis has never been validated. Objectives. This in vitro study evaluated stability of resin-dentin bonds created with an experimental three-step BisGMA/TEGDMA hydrophobic adhesive or a three-step hydrophilic adhesive after one year of accelerated aging in artificial saliva. Methods. Flat surfaces in mid-coronal dentin were obtained from 45 sound human molars and randomly divided into three groups (n = 15): an experimental three-step BisGMA/TEGDMA hydrophobic adhesive applied to ethanol (ethanol-wet bonding-GI) or water-saturated dentin (water-wet bonding-GII) and Adper Scotchbond Multi-Purpose [MP-GIII] applied, according to manufacturer instructions, to water-saturated dentin. Resin composite crowns were incrementally formed and light-cured to approximately 5 mm in height. Bonded specimens were stored in artificial saliva at 37 degrees C for 24h and sectioned into sticks. They were subjected to microtensile bond test and TEM analysis immediately and after one year. Data were analyzed with two-way ANOVA and Tukey tests. Results. MP exhibited significant reduction in microtensile bond strength after aging (24 h: 40.6 +/- 2.5(a); one year: 27.5 +/- 3.3(b); in MPa). Hybrid layer degradation was evident in all specimens examined by TEM. The hydrophobic adhesive with ethanol-wet bonding preserved bond strength (24 h: 43.7 +/- 7.4(a); one year: 39.8 +/- 2.7(a)) and hybrid layer integrity, with the latter demonstrating intact collagen fibrils and wide interfibrillar spaces. Significance. Coaxing hydrophobic resins into acid-etched dentin using ethanol-wet bonding preserves resin-dentin bond integrity without the adjunctive use of MMPs inhibitors and warrants further biocompatibility and patient safety`s studies and clinical testing. (C) 2009 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. | |
dc.language | eng | |
dc.publisher | ELSEVIER SCI LTD | |
dc.relation | Dental Materials | |
dc.rights | Copyright ELSEVIER SCI LTD | |
dc.rights | restrictedAccess | |
dc.subject | Hydrophobic resin | |
dc.subject | Ethanol-wet bonding | |
dc.subject | Hybrid layer | |
dc.subject | Degradation | |
dc.title | One-year stability of resin-dentin bonds created with a hydrophobic ethanol-wet bonding technique | |
dc.type | Artículos de revistas | |