Bioactive glass particulate filler composite: Effect of coupling of fillers and filler loading on some physical properties

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dc.contributor.authorOral, Onur
dc.contributor.authorLassila, Lippo V.
dc.contributor.authorKumbuloglu, Ovul
dc.contributor.authorVallittu, Pekka K.
dc.date.accessioned2019-10-27T22:15:21Z
dc.date.available2019-10-27T22:15:21Z
dc.date.issued2014
dc.departmentEge Üniversitesien_US
dc.description.abstractObjectives. The aim of this study was to investigate the effect of silanization of biostable and bioactive glass fillers in a polymer matrix on some of the physical properties of the composite. Methods. The water absorption, solubility, flexural strength, flexural modulus and toughness of different particulate filler composite resins were studied in vitro. Five different specimen groups were analyzed: A glass-free control, a non-silanized bioactive glass, a silanized bioactive glass, a non-silanized biostable glass and a silanized biostable glass groups. All of these five groups were further divided into sub-groups of dry and water-stored materials, both of them containing groups with 3 wt%, 6 wt%, 9 wt% or 12 wt% of glass particles (n = 8 per group). The silanization of the glass particles was carried out with 2% of gamma-3-methacryloxyproyltrimethoxysilane (MPS). For the water absorption and solubility tests, the test specimens were stored in water for 60 days, and the percentages of weight change were statistically analyzed. Flexural strength, flexural modulus and toughness values were tested with a three-point bending test and statistically analyzed. Results. Higher solubility values were observed in non-silanized glass in proportion to the percentage of glass particles. Silanization, on the other hand, decreased the solubility values of both types of glass particles and polymer. While 12 wt% non-silanized bioactive glass specimens showed -0.98 wt% solubility, 12 wt% silanized biostable glass specimens were observed to have only -0.34 wt% solubility. The three-point bending results of the dry specimens showed that flexural strength, toughness and flexural modulus decreased in proportion to the increase of glass fillers. The control group presented the highest results (106.6 MPa for flexural strength, 335.7 kPA for toughness, 3.23 GPa for flexural modulus), whereas for flexural strength and toughness, 12 wt% of non-silanized biostable glass filler groups presented the lowest (70.3 MPa for flexural strength, 111.5 kPa for toughness). For flexural modulus on the other hand, 12 wt% of silanized biostable glass filler group gave the lowest results (2.57 GPa). Significance. The silanization of glass fillers improved the properties of the glass as well as the properties of the composite. Silanization of bioactive glass may protect the glass from leaching at early stage of water storage. Crown Copyright (C) 2014 Published by Elsevier Ltd on behalf of The Academy of Dental Materials. All rights reserved.en_US
dc.description.sponsorshipCIMO (Centre for International Mobility)en_US
dc.description.sponsorshipThis research was financially supported by CIMO (Centre for International Mobility) and it was carried out in Turku ClinicalBiomaterials Centre - TCBC, University of Turku, Finland. This research is part of the BioCity Turku Biomaterials Research Program (www.biomaterials.utu.fi). Minttu Vigren, Genevieve Alfont and Hanna Mark are thanked for their help with tests in TCBC. Professor Jukka Matinlinna (University of Hong Kong) is thanked for sharing his silane studies with us. Timothy Wilson is thanked for proofreading the manuscript.en_US
dc.identifier.doi10.1016/j.dental.2014.02.017en_US
dc.identifier.endpage577en_US
dc.identifier.issn0109-5641
dc.identifier.issn1879-0097
dc.identifier.issue5en_US
dc.identifier.pmid24655591en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage570en_US
dc.identifier.urihttps://doi.org/10.1016/j.dental.2014.02.017
dc.identifier.urihttps://hdl.handle.net/11454/50159
dc.identifier.volume30en_US
dc.identifier.wosWOS:000334585200015en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofDental Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBioactive glassen_US
dc.subjectBiostable glassen_US
dc.subjectSilanizationen_US
dc.subjectPolymersen_US
dc.subjectCompositeen_US
dc.subjectBiopolymeren_US
dc.titleBioactive glass particulate filler composite: Effect of coupling of fillers and filler loading on some physical propertiesen_US
dc.typeArticleen_US

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