Development and characterization of self-etching adhesives doped with 45S5 and niobophosphate bioactive glasses: Physicochemical, mechanical, bioactivity and interface properties

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dc.coverageDOI: 10.1016/j.dental.2021.03.004
dc.creatorCarvalho, Edilausson Moreno
dc.creatorFerreira, Paulo Vitor Campos
dc.creatorGutiérrez, Mario Felipe
dc.creatorSampaio, Ruan Ferreira
dc.creatorCarvalho, Ceci Nunes
dc.creatorMenezes, Alan Silva de
dc.creatorLoguercio, Alessandro Dourado
dc.creatorBauer, José
dc.date2021
dc.date.accessioned2025-11-18T19:41:16Z
dc.date.available2025-11-18T19:41:16Z
dc.descriptionObjective: The aim of study was to develop and characterize experimental bioactive glasses (45S5 and niobophosphate bioactive glass (NbG)) and evaluate the effects of their addition in self-etching adhesive systems on physicochemical, mechanical, and bioactive properties, microtensile bond strength (μTBS), and nanoleakage (NL).<br/><br/>Methods: Two-step self-etching adhesive systems containing 5, 10, and 20 wt.% of 45S5 and NbG bioactive glasses were developed. An experimental adhesive without microparticles and a commercial adhesive (Clearfil SE Bond) were used as control groups. The materials were evaluated for their degree of conversion (DC%), ultimate tensile strength (UTS), softening in solvent, radiopacity, sorption and solubility, alkalizing activity (pH), ionic release, and bioactivity. μTBS and NL were evaluated after 24 h and 1 year of storage. The data were subjected to analysis of variance and post-Holm-Sidak tests (α = 0.05).<br/><br/>Results: The addition of the two bioactive glasses did not change the values of the degree of conversion, ultimate tensile strength, and softening in solvent. The adhesive system containing 20% NbG showed the highest radiopacity. The incorporation of 45S5 increased water sorption and solubility, raised the pH, and allowed the release of large amounts of calcium. After 28 days of immersion in simulated body fluid, the 45S5 adhesive precipitated hydroxyapatite and calcium carbonate (SEM/EDX, ATR/FTIR, and XDR). The addition of 45S5 and NbG to the adhesives improved the stability of the resin-dentin interface after 1 year.<br/><br/>Significance: The incorporation of microparticles from 45S5 bioactive glass in self-etching adhesive systems is considered an excellent alternative for the development of a bioactive adhesive that improves the integrity of the hybrid layer on sound dentin.<br/>eng
dc.identifierhttps://investigadores.uandes.cl/en/publications/d5a2ace2-9719-4f11-bd73-ca111dc6c390
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/51723
dc.languageeng
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.sourcevol.37 (2021) date: 2021-06-01 nr.6 p.1030-1045
dc.subjectAlkalizing activity
dc.subjectBioactive glass
dc.subjectBioactivity
dc.subjectIons release
dc.subjectMechanical properties
dc.subjectMicrotensile bonding strength
dc.subjectNanoleakage
dc.subjectSelf-etching adhesive systems
dc.subjectDentin
dc.subjectTensile Strength
dc.subjectMaterials Testing
dc.subjectDental Cements
dc.subjectDental Bonding
dc.titleDevelopment and characterization of self-etching adhesives doped with 45S5 and niobophosphate bioactive glasses: Physicochemical, mechanical, bioactivity and interface propertieseng
dc.typeArticleeng
dc.typeArtículospa
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