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- Publisher Website: 10.1016/j.dental.2004.07.016
- Scopus: eid_2-s2.0-18544385928
- PMID: 15904692
- WOS: WOS:000229682000003
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Article: The effect of particle size distribution on an experimental glass-ionomer cement
Title | The effect of particle size distribution on an experimental glass-ionomer cement |
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Authors | |
Keywords | Chemicals And Cas Registry Numbers |
Issue Date | 2005 |
Publisher | Elsevier 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/90599 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.186 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Prentice, LH | en_HK |
dc.contributor.author | Tyas, MJ | en_HK |
dc.contributor.author | Burrow, MF | en_HK |
dc.date.accessioned | 2010-09-17T10:05:29Z | - |
dc.date.available | 2010-09-17T10:05:29Z | - |
dc.date.issued | 2005 | en_HK |
dc.identifier.citation | Dental Materials, 2005, v. 21 n. 6, p. 505-510 | en_HK |
dc.identifier.issn | 0109-5641 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/90599 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental | en_HK |
dc.relation.ispartof | Dental Materials | en_HK |
dc.subject | Chemicals And Cas Registry Numbers | en_HK |
dc.subject.mesh | Analysis of Variance | en_HK |
dc.subject.mesh | Compressive Strength | en_HK |
dc.subject.mesh | Glass Ionomer Cements - chemistry | en_HK |
dc.subject.mesh | Hardness | en_HK |
dc.subject.mesh | Materials Testing | en_HK |
dc.subject.mesh | Particle Size | en_HK |
dc.subject.mesh | Powders | en_HK |
dc.subject.mesh | Viscosity | en_HK |
dc.title | The effect of particle size distribution on an experimental glass-ionomer cement | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Burrow, MF:mfburr58@hku.hk | en_HK |
dc.identifier.authority | Burrow, MF=rp01306 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.dental.2004.07.016 | en_HK |
dc.identifier.pmid | 15904692 | - |
dc.identifier.scopus | eid_2-s2.0-18544385928 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-18544385928&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 21 | en_HK |
dc.identifier.issue | 6 | en_HK |
dc.identifier.spage | 505 | en_HK |
dc.identifier.epage | 510 | en_HK |
dc.identifier.isi | WOS:000229682000003 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Prentice, LH=8656056400 | en_HK |
dc.identifier.scopusauthorid | Tyas, MJ=7006088443 | en_HK |
dc.identifier.scopusauthorid | Burrow, MF=7005876730 | en_HK |
dc.identifier.issnl | 0109-5641 | - |