Dry-bonding to dentin using alternative conditioners based on iron-containing solutions or nitric acid

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dc.creatorMaicon Sebold
dc.creatorCarolina Bosso André
dc.creatorRicardo Marins Carvalho
dc.creatorMarcelo Giannini
dc.date.accessioned2022-09-24T16:24:34Z
dc.date.accessioned2025-09-09T01:16:42Z
dc.date.available2022-09-24T16:24:34Z
dc.date.issued2019-06
dc.format.mimetypepdf
dc.identifier.doi10.1016/j.jmbbm.2019.03.015
dc.identifier.issn17516161
dc.identifier.urihttps://hdl.handle.net/1843/45433
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of the Mechanical Behavior of Biomedical materials
dc.rightsAcesso Restrito
dc.subjectDentin-bonding agents
dc.subjectDentin mechanical properties
dc.subjectNitric acid
dc.subjectTensile strength.
dc.subjectConfocal microscopy
dc.subject.otherConfocal microscopy
dc.subject.otherDental acid etching
dc.subject.otherDentin mechanical properties
dc.subject.otherIron compounds
dc.titleDry-bonding to dentin using alternative conditioners based on iron-containing solutions or nitric acid
dc.typeArtigo de periódico
local.citation.epage248
local.citation.spage238
local.citation.volume94
local.description.resumoObjectives: To evaluate the effect of experimental conditioners (10-3 solution - 10-3, 6.8% ferric oxalate - FOX, and 1.4% nitric acid - NI) on dentin elastic modulus, flexural strength, bond strength, failure mode, and adhesive interface morphology of two etch-and-rinse adhesives (XP Bond, Dentsply or One-Step, Bisco) applied on etched dry dentin. Methods: Sound human third molars were used for the microtensile bond strength test (n = 8), performed at 24 h and after one year of water storage. Failure modes were evaluated by scanning electron microscopy. Dentin bonding interface was analyzed by confocal laser scanning microscopy (n = 3). Adhesive systems were applied on phosphoric acid-etched, wet (positive control) and dry (negative control) dentin, and on etched and dry dentin previously treated with 10-3 (15s), FOX (60s), or NI (15s). Bovine dentin bars (n = 15) were immersed into the conditioning solutions and subjected to a three-point bending test. Results: XP Bond + 10-3 or NI resulted in lower bond strength than phosphoric acid. One-Step + 10-3 or NI resulted in bond strengths equivalent to the positive control. Experimental conditioners presented no bond strength reduction after one year, regardless of the bonding agent tested. One-Step resulted in more adhesive failures than XP Bond at 24 h, and mixed failures increased after storage. All experimental conditioners promoted hybridization and resin tags formation, except FOX. Dentin elastic modulus was not affected by the conditioners, whereas flexural strength was significantly reduced by FOX. Conclusions: Adequate and stable dentin bonds were achieved when the bonding agents were applied on 10-3 or NI-treated dentin. None of the experimental conditioners reduced dentin elastic modulus, but dentin flexural strength was significantly reduced by FOX-conditioning
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/abs/pii/S1751616118313389?via%3Dihub

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