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Article: Effect of resin hydrophilicity on tracer penetration. A preliminary study

TitleEffect of resin hydrophilicity on tracer penetration. A preliminary study
Authors
Issue Date2005
PublisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.com
Citation
American Journal Of Dentistry, 2005, v. 18 n. 3, p. 160-164 How to Cite?
AbstractPurpose: To evaluate, by transmission electron microscopy, the extent of silver nitrate penetration into four polymerized resin blends with increasing degree of hydrophilicity after a period of 24 hours. Methods: The uncured resin was polymerized in an experimental composite inlay processing chamber under a pressurized nitrogen atmosphere maintained at 551.6 KPa and light-activated for one complete cycle at 125°C for 10 minutes. The resin blocks were sectioned occluso-gingivally into multiple 0.9 x 0.9 x 5 mm resin beams, and immersed in 50% basic, ammoniacal silver nitrate for 24 hours, exposed to a photodeveloping solution and prepared for transmission electron microscopy. The percentage distributions of silver deposits were compared using Kruskal-Wallis one-way analysis of variance (ANOVA) on ranks and Dunn's multiple comparison tests. Results: No silver uptake occurred in the two most hydrophobic resins (Groups 1 & 2). The percentage distributions of silver deposits in the more hydrophilic Group 3 (6.23±1.35%) and 4 (5.08±1.09%) resins were significantly higher (P< 0.05) than were found in the more hydrophobic resins but Groups 3 and 4 were not significantly different from each other. The intensity of silver uptake increased with hydrophilicity of the resin blends. TEM examination revealed two types of silver deposits: fine spotted-type silver grains, and islands of interconnecting electron-dense clusters of silver grains. Phase separation of resin components was observed in Group 4 resin blends.
Persistent Identifierhttp://hdl.handle.net/10722/154354
ISSN
2015 Impact Factor: 1.194
2015 SCImago Journal Rankings: 0.443
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYiu, CKYen_US
dc.contributor.authorTay, FRen_US
dc.contributor.authorPashley, DHen_US
dc.contributor.authorKing, NMen_US
dc.contributor.authorSuh, BIen_US
dc.contributor.authorItthagarun, Aen_US
dc.date.accessioned2012-08-08T08:24:50Z-
dc.date.available2012-08-08T08:24:50Z-
dc.date.issued2005en_US
dc.identifier.citationAmerican Journal Of Dentistry, 2005, v. 18 n. 3, p. 160-164en_US
dc.identifier.issn0894-8275en_US
dc.identifier.urihttp://hdl.handle.net/10722/154354-
dc.description.abstractPurpose: To evaluate, by transmission electron microscopy, the extent of silver nitrate penetration into four polymerized resin blends with increasing degree of hydrophilicity after a period of 24 hours. Methods: The uncured resin was polymerized in an experimental composite inlay processing chamber under a pressurized nitrogen atmosphere maintained at 551.6 KPa and light-activated for one complete cycle at 125°C for 10 minutes. The resin blocks were sectioned occluso-gingivally into multiple 0.9 x 0.9 x 5 mm resin beams, and immersed in 50% basic, ammoniacal silver nitrate for 24 hours, exposed to a photodeveloping solution and prepared for transmission electron microscopy. The percentage distributions of silver deposits were compared using Kruskal-Wallis one-way analysis of variance (ANOVA) on ranks and Dunn's multiple comparison tests. Results: No silver uptake occurred in the two most hydrophobic resins (Groups 1 & 2). The percentage distributions of silver deposits in the more hydrophilic Group 3 (6.23±1.35%) and 4 (5.08±1.09%) resins were significantly higher (P< 0.05) than were found in the more hydrophobic resins but Groups 3 and 4 were not significantly different from each other. The intensity of silver uptake increased with hydrophilicity of the resin blends. TEM examination revealed two types of silver deposits: fine spotted-type silver grains, and islands of interconnecting electron-dense clusters of silver grains. Phase separation of resin components was observed in Group 4 resin blends.en_US
dc.languageengen_US
dc.publisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.comen_US
dc.relation.ispartofAmerican Journal of Dentistryen_US
dc.subject.meshAnalysis Of Varianceen_US
dc.subject.meshBisphenol A-Glycidyl Methacrylate - Chemistryen_US
dc.subject.meshComposite Resins - Chemistryen_US
dc.subject.meshEpoxy Resins - Chemistryen_US
dc.subject.meshHydrophobic And Hydrophilic Interactionsen_US
dc.subject.meshMaterials Testingen_US
dc.subject.meshMethacrylates - Chemistryen_US
dc.subject.meshMicroscopy, Electron, Transmissionen_US
dc.subject.meshPermeabilityen_US
dc.subject.meshPhase Transitionen_US
dc.subject.meshPolyethylene Glycols - Chemistryen_US
dc.subject.meshPolymethacrylic Acids - Chemistryen_US
dc.subject.meshResin Cements - Chemistryen_US
dc.subject.meshSilver Nitrate - Chemistryen_US
dc.subject.meshSolubilityen_US
dc.subject.meshStatistics, Nonparametricen_US
dc.subject.meshWater - Chemistryen_US
dc.subject.meshWettabilityen_US
dc.titleEffect of resin hydrophilicity on tracer penetration. A preliminary studyen_US
dc.typeArticleen_US
dc.identifier.emailYiu, CKY:ckyyiu@hkucc.hku.hken_US
dc.identifier.emailKing, NM:hhdbknm@hkucc.hku.hken_US
dc.identifier.authorityYiu, CKY=rp00018en_US
dc.identifier.authorityKing, NM=rp00006en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid16158805-
dc.identifier.scopuseid_2-s2.0-23844490519en_US
dc.identifier.hkuros100036-
dc.identifier.hkuros138542-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-23844490519&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume18en_US
dc.identifier.issue3en_US
dc.identifier.spage160en_US
dc.identifier.epage164en_US
dc.identifier.isiWOS:000230947800004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYiu, CKY=7007115156en_US
dc.identifier.scopusauthoridTay, FR=7102091962en_US
dc.identifier.scopusauthoridPashley, DH=35448600800en_US
dc.identifier.scopusauthoridKing, NM=7201762850en_US
dc.identifier.scopusauthoridSuh, BI=7103193857en_US
dc.identifier.scopusauthoridItthagarun, A=6701591745en_US

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