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Article: The effect of particle size distribution on an experimental glass-ionomer cement

TitleThe effect of particle size distribution on an experimental glass-ionomer cement
Authors
KeywordsChemicals And Cas Registry Numbers
Issue Date2005
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental
Citation
Dental Materials, 2005, v. 21 n. 6, p. 505-510 How to Cite?
AbstractThe role of particle size and size distribution of glass powders in glass-ionomer cements (GICs) has been largely overlooked, being limited to demonstrations of the classical inverse size-strength relationship. This study investigated variation in properties of an experimental glass-ionomer cement when a combination of large ('Powder A') and small ('Powder B') particles was used. Large- (mean size 9.60 μm) and small-particle (3.34 μm) glass powders were blended in various proportions and mixed with powdered polyacrylic acid to make a range of glass-ionomer powders. These powders were mixed with a glass-ionomer liquid (SDI Ltd, Australia) at powder to liquid ratios of 2:1, 2.5:1, and 3:1, and the resultant cements evaluated for working time, setting time, clinical handling, and compressive strength. Results were analysed by ANOVA. An increased proportion of smaller particles corresponded to higher strengths, and an increased proportion of larger particles with a decrease in viscosity of the unset cement. When 20-30% by weight of small particles was used, the paste demonstrated a peak in cohesion and working time, with a viscosity similar to commercial restorative GICs. Optimisation of particle sizing and distribution may thus lead to glass-ionomer cements with improved clinical handling characteristics and greater strength, which may increase the longevity of the restoration. © 2004 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/90599
ISSN
2015 Impact Factor: 3.931
2015 SCImago Journal Rankings: 1.339
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPrentice, LHen_HK
dc.contributor.authorTyas, MJen_HK
dc.contributor.authorBurrow, MFen_HK
dc.date.accessioned2010-09-17T10:05:29Z-
dc.date.available2010-09-17T10:05:29Z-
dc.date.issued2005en_HK
dc.identifier.citationDental Materials, 2005, v. 21 n. 6, p. 505-510en_HK
dc.identifier.issn0109-5641en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90599-
dc.description.abstractThe role of particle size and size distribution of glass powders in glass-ionomer cements (GICs) has been largely overlooked, being limited to demonstrations of the classical inverse size-strength relationship. This study investigated variation in properties of an experimental glass-ionomer cement when a combination of large ('Powder A') and small ('Powder B') particles was used. Large- (mean size 9.60 μm) and small-particle (3.34 μm) glass powders were blended in various proportions and mixed with powdered polyacrylic acid to make a range of glass-ionomer powders. These powders were mixed with a glass-ionomer liquid (SDI Ltd, Australia) at powder to liquid ratios of 2:1, 2.5:1, and 3:1, and the resultant cements evaluated for working time, setting time, clinical handling, and compressive strength. Results were analysed by ANOVA. An increased proportion of smaller particles corresponded to higher strengths, and an increased proportion of larger particles with a decrease in viscosity of the unset cement. When 20-30% by weight of small particles was used, the paste demonstrated a peak in cohesion and working time, with a viscosity similar to commercial restorative GICs. Optimisation of particle sizing and distribution may thus lead to glass-ionomer cements with improved clinical handling characteristics and greater strength, which may increase the longevity of the restoration. © 2004 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dentalen_HK
dc.relation.ispartofDental Materialsen_HK
dc.subjectChemicals And Cas Registry Numbersen_HK
dc.subject.meshAnalysis of Varianceen_HK
dc.subject.meshCompressive Strengthen_HK
dc.subject.meshGlass Ionomer Cements - chemistryen_HK
dc.subject.meshHardnessen_HK
dc.subject.meshMaterials Testingen_HK
dc.subject.meshParticle Sizeen_HK
dc.subject.meshPowdersen_HK
dc.subject.meshViscosityen_HK
dc.titleThe effect of particle size distribution on an experimental glass-ionomer cementen_HK
dc.typeArticleen_HK
dc.identifier.emailBurrow, MF:mfburr58@hku.hken_HK
dc.identifier.authorityBurrow, MF=rp01306en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.dental.2004.07.016en_HK
dc.identifier.pmid15904692-
dc.identifier.scopuseid_2-s2.0-18544385928en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-18544385928&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume21en_HK
dc.identifier.issue6en_HK
dc.identifier.spage505en_HK
dc.identifier.epage510en_HK
dc.identifier.isiWOS:000229682000003-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPrentice, LH=8656056400en_HK
dc.identifier.scopusauthoridTyas, MJ=7006088443en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK

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