Interaction of resin-modified glass-ionomer cements with moist dentine

dc.creatorYiu, CKY
dc.creatorTay, FR
dc.creatorKing, NM
dc.creatorPashley, DH
dc.creatorCarvalho, RM
dc.creatorCarrilho, MRO
dc.date2004
dc.dateSEP
dc.date2014-11-20T03:31:38Z
dc.date2015-11-26T17:13:22Z
dc.date2014-11-20T03:31:38Z
dc.date2015-11-26T17:13:22Z
dc.date.accessioned2018-03-29T00:01:43Z
dc.date.available2018-03-29T00:01:43Z
dc.identifierJournal Of Dentistry. Elsevier Sci Ltd, v. 32, n. 7, n. 521, n. 530, 2004.
dc.identifier0300-5712
dc.identifierWOS:000223574200003
dc.identifier10.1016/j.jdent.2004.04.005
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60375
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/60375
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60375
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1281554
dc.descriptionObjectives. The objective of this study was to report on a novel phenomenon that occurs when resin-modified glass-ionomer cements (RMGICs) are bonded to moist human dentine. Methods. Dentine surfaces from extracted third molars were abraded with 180-grit SiC paper. Ten teeth were prepared for each of the two RMGICs tested (Fuji II LC, GC Corp. and Photac-Fil Quick, 3M ESPE). RMGIC buildups were made according to the manufacturers' instructions. After storage at 37 degreesC, 100% humidity for 24 h, the bonded specimens were cut occlusogingivally into 0.9 x 0.9 mm beams. Dentine surfaces bonded with the two RMGICs were examined along the fractured RMGIC/dentine interfaces. Additional beams fractured within the RMGICS and at 3 mm away from the interfaces were used as controls. The fractured beams were examined using scanning electron microscopy (SEM), field emission-environmental SEM (FE-ESEM) and transmission electron microscopy (TEM). Results. SEM and FE-ESEM revealed numerous solid spherical bodies along the RMGIC/dentine interfaces. By contrast, no spherical bodies could be identified within the RMGIC fractured 3 mm distant from the bonded interface. TEM and energy dispersive X-ray analyses performed on carbon-coated ultrathin sections showed that these solid spherical bodies consisted of a thin aluminum and silicon-rich periphery and an amorphous hydrocarbon core within the air voids of the original resin matrix. Conclusion. The spherical bodies probably represent a continuation of GI reaction and poly(HEMA) hydrogel formation that results from water diffusion from the underlying moist dentine. Their existence provides evidence for the permeation of water through RMGIC/dentine interfaces. (C) 2004 Published by Elsevier Ltd.
dc.description32
dc.description7
dc.description521
dc.description530
dc.languageen
dc.publisherElsevier Sci Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationJournal Of Dentistry
dc.relationJ. Dent.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectresin-modified glass-ionomer
dc.subjectcement
dc.subjectdentine
dc.subjectinterface
dc.subjectwater movement
dc.subjectpermeability
dc.subjectScanning-electron-microscopy
dc.subjectWater Sorption
dc.subjectBond Strength
dc.subjectAdhesive
dc.subjectEsem
dc.subjectRestoratives
dc.subjectInterfaces
dc.subjectMechanism
dc.subjectFtir
dc.titleInteraction of resin-modified glass-ionomer cements with moist dentine
dc.typeArtículos de revistas


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