Bond strength and adhesive interface analysis using EDTA as a dentin conditioner

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dc.creatorMaicon Sebold
dc.creatorCarolina Bosso André
dc.creatorFabio Dupart Nascimento
dc.creatorGlaucia Maria Bovi Ambrosano
dc.creatorMarcelo Giannini
dc.date.accessioned2022-08-29T18:16:25Z
dc.date.accessioned2025-09-08T23:51:15Z
dc.date.available2022-08-29T18:16:25Z
dc.date.issued2017-09
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.format.mimetypepdf
dc.identifier.doi10.1016/j.ijadhadh.2017.05.006
dc.identifier.issn01437496
dc.identifier.urihttps://hdl.handle.net/1843/44675
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofInternational Journal of Adhesion and Adhesives
dc.rightsAcesso Restrito
dc.subjectEdetic acid
dc.subjectPhosphines
dc.subjectDentin-bonding agents
dc.subjectDentin
dc.subject.otherDentin
dc.subject.otherDental acid etching
dc.subject.otherEDTA
dc.subject.otherBond strength
dc.titleBond strength and adhesive interface analysis using EDTA as a dentin conditioner
dc.typeArtigo de periódico
local.citation.epage163
local.citation.spage157
local.citation.volume77
local.description.resumoThis study evaluated dentin bond strength and dentin-resin interfacial morphology using phosphoric acid-etching and EDTA-conditioning. The occlusal enamel of twenty-four human third molars was removed to expose the dentin surfaces, which were polished with a SiC paper (600 grit). Teeth were randomly divided into three groups (n = 8): etching with 37% phosphoric acid (15 s), conditioning with 0.1 M EDTA (60 s) and 0.5 M EDTA (120 s). Adhesive (XP Bond, Dentsply) was applied and three layers (2 mm each) of composite (EsthetX, Dentsply) were placed and light-activated separately (20 s). Teeth were sectioned to obtain specimens for the microtensile bond strength test (1 mm2 at cross section). Half of the specimens was tested in a universal testing machine (EZ Test, Shimadzu) after 24 h and the other half after storage for 10 months. Failure mode and adhesive interface were analyzed using scanning electron microscopy. Data were analyzed by mixed models for repeated measures (PROC MIXED) and Tukey-Kramer test, considering a significance level of 5%. Mean bond strength values (SD) after 24 h and 10 months were, respectively (in MPa): phosphoric acid: 37.3 (7.7) / 33.9 (6.7); 0.1 M EDTA: 14.7 (7.3) / 15.1 (10.1); 0.5 M EDTA: 25.1 (7.7) / 21.1 (14.1). Dentin treatment with EDTA and phosphoric acid resulted in hybrid layer and resin tags formation. Mixed failures were prevalent for all groups tested after 24 h. Storage for 10 months changed the failure mode for the 0.5 M EDTA group to adhesive failure (between dentin and bonding agent). EDTA applied for 60 s yielded lower bond strength results compared to phosphoric acid and EDTA (120 s), but there was no significant reduction after 10 months of storage for any of the tested groups
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0143749617301008

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