Influence of inorganic composition and filler particle morphology on the mechanical properties of self-adhesive resin cements

dc.contributor.authorSanti, Marina Rodrigues
dc.contributor.authorLins, Rodrigo Barros Esteves
dc.contributor.authorSahadi, Beatriz Ometto
dc.contributor.authorDenucci, Giovanna Corrêa
dc.contributor.authorSoffner, Gabriela
dc.contributor.authorMartins, Luís Roberto Marcondes
dc.contributor.departmentCariology, Operative Dentistry and Dental Public Health, School of Dentistry
dc.date.accessioned2025-04-04T10:57:02Z
dc.date.available2025-04-04T10:57:02Z
dc.date.issued2022-07-14
dc.description.abstractObjectives: This study aimed to evaluate the influence of inorganic composition and filler particle morphology on the mechanical properties of different self-adhesive resin cements (SARCs). Materials and methods: Three SARCs including RelyX Unicem-2 (RUN), Maxcem Elite (MAX), and Calibra Universal (CAL) were tested. Rectangular bar-shaped specimens were prepared for flexural strength (FS) and flexural modulus (FM) and determined by a 3-point bending test. The Knoop microhardness (KHN) and top/bottom microhardness ratio (%KHN) were conducted on the top and bottom faces of disc-shaped samples. Sorption (Wsp) and solubility (Wsl) were evaluated after 24 hours of water immersion. Filler morphology was analyzed by scanning electron microscopy and X-ray energy dispersive spectroscopy (EDS). FS, FM, %KHN, Wsp, Wsl, and EDS results were submitted to 1-way analysis of variance and Tukey's post-hoc test, and KHN also to paired t-test (α = 0.05). Results: SARC-CAL presented the highest FS value, and SARC-RUN presented the highest FM. SARC-MAX and RUN showed the lowest Wsp and Wsl values. KHN values decreased from top to bottom and the SARCs did not differ statistically. Also, all resin cements presented carbon, aluminum, and silica in their composition. SARC-MAX and RUN showed irregular and splintered particles while CAL presented small and regular size particles. Conclusions: A higher mechanical strength can be achieved by a reduced spread in grit size and the filler morphology can influence the KHN, as well as photoinitiators in the composition. Wsp and Wsl can be correlated with ions diffusion of inorganic particles.
dc.eprint.versionFinal published version
dc.identifier.citationSanti MR, Lins RBE, Sahadi BO, Denucci GC, Soffner G, Martins LRM. Influence of inorganic composition and filler particle morphology on the mechanical properties of self-adhesive resin cements. Restor Dent Endod. 2022;47(3):e32. Published 2022 Jul 14. doi:10.5395/rde.2022.47.e32
dc.identifier.urihttps://hdl.handle.net/1805/46829
dc.language.isoen_US
dc.publisherKorean Academy of Conservative Dentistry
dc.relation.isversionof10.5395/rde.2022.47.e32
dc.relation.journalRestorative Dentistry & Endodontics
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.sourcePMC
dc.subjectInorganic fillers
dc.subjectMechanical properties
dc.subjectMorphology
dc.subjectResin cements
dc.titleInfluence of inorganic composition and filler particle morphology on the mechanical properties of self-adhesive resin cements
dc.typeArticle
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